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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#358927#3501. JailRikku_eq100 ✓642ms75128kbC++144.1kb2024-03-20 08:53:472024-03-20 08:53:48

Judging History

你现在查看的是最新测评结果

  • [2024-03-20 08:53:48]
  • 评测
  • 测评结果:100
  • 用时:642ms
  • 内存:75128kb
  • [2024-03-20 08:53:47]
  • 提交

answer

#include <bits/stdc++.h>
#define ls(u) tr[u].ls
#define rs(u) tr[u].rs
#define N 120005
using namespace std;
typedef long long ll;

int Q;
int n, m, rt, tot, totN;
int tI[N], tO[N], tmr, sz[N], son[N], top[N], id[N];
int p[N], d[N], ids[N], idt[N];
vector <int> sto[N], tto[N*5];

bool vst[N*5], instk[N*5];

struct Seg { int ls, rs; } tr[N*2];

void dfs_son (int u, int fa)
{
    sz[u]=1;
    for (int i=0; i<(int)sto[u].size(); i++) {
        int v=sto[u][i];
        if (v==fa) { continue; }
        p[v]=u; d[v]=d[u]+1;
        dfs_son(v, u);
        sz[u]+=sz[v];
        if (sz[v]>sz[son[u]]) { son[u]=v; }
    }
}
void dfs_top (int u, int fa)
{
    tI[u]=++tmr; id[tmr]=u;
    if (son[fa]==u) { top[u]=top[fa]; }
    else { top[u]=u; }

    if (son[u]) { dfs_top(son[u], u); }
    for (int i=0; i<(int)sto[u].size(); i++) {
        int v=sto[u][i];
        if (v==fa || v==son[u]) { continue; }
        dfs_top(v, u);
    }

    tO[u]=tmr;
}

inline int idp (int i) { return i+tot+tot; }

void buildST (int &u, int l, int r)
{
    if (!u) { u=++tot; }
    if (l==r) { return; }
    int md=(l+r)/2;
    buildST(ls(u), l, md);
    buildST(rs(u), md+1, r);
}

void builded (int u, int l, int r)
{
    if (l==r) {
        ids[id[l]]=u;
        idt[id[l]]=u+tot;
        return;
    }
    int md=(l+r)/2;
    builded(ls(u), l, md);
    builded(rs(u), md+1, r);
    tto[u].push_back(ls(u));
    tto[u].push_back(rs(u));
    tto[ls(u)+tot].push_back(u+tot);
    tto[rs(u)+tot].push_back(u+tot);
}

void upd (int u, int l, int r, int ql, int qr, int tg, int id)
{
    if (l>qr || r<ql) { return; }
    if (ql<=l && r<=qr) {
        if (!tg) { tto[id].push_back(u); }
        else { tto[u+tot].push_back(id); }
        return;
    }
    int md=(l+r)/2;
    upd(ls(u), l, md, ql, qr, tg, id);
    upd(rs(u), md+1, r, ql, qr, tg, id);
}

bool up (int u, int v) { return tI[u]<=tI[v] && tO[v]<=tO[u]; }

void add (int tg, int id, int u, int v)
{
    int uu=u, vv=v;

    if (!tg && !up(u, v)) { u=p[u]; }
    if (tg && !up(v, u)) { v=p[v]; }

    while (top[u]!=top[v]) {
        if (d[top[u]]<d[top[v]]) { swap(u, v); }
        upd(rt, 1, n, tI[top[u]], tI[u], tg, id);
        u=p[top[u]];
    }
    if (d[u]>d[v]) { swap(u, v); }

    if (!tg && up(uu, vv)) {
        if (u!=v) { upd(rt, 1, n, tI[u]+1, tI[v], tg, id); }
    }
    else if (tg && up(vv, uu)) {
        if (u!=v) { upd(rt, 1, n, tI[u]+1, tI[v], tg, id); }
    }
    else {
        upd(rt, 1, n, tI[u], tI[v], tg, id);
    }
}

bool cal (int u)
{
    if (vst[u]) { return 1; }
    vst[u]=1; instk[u]=1;
    for (int i=0; i<(int)tto[u].size(); i++) {
        int v=tto[u][i];
        if (instk[v]) { return 0; }
        bool cur=cal(v);
        if (!cur) { return 0; }
    }
    instk[u]=0;
    return 1;
}

void clr ()
{
    for (int i=1; i<=n; i++) { sto[i].clear(); }
    for (int i=1; i<=n; i++) { son[i]=0; }
    for (int i=1; i<=totN; i++) { tto[i].clear(); vst[i]=0; instk[i]=0; }
    for (int i=1; i<=tot; i++) { tr[i].ls=0; tr[i].rs=0; }
    rt=0; tot=0; totN=0; tmr=0;
}

int main ()
{
    // freopen("0test.in", "r", stdin);
    // freopen("0test.out", "w", stdout);

    scanf("%d", &Q);
    while (Q--) {
        clr();
        scanf("%d", &n);
        for (int i=1; i<n; i++) {
            int u, v; scanf("%d %d", &u, &v);
            sto[u].push_back(v);
            sto[v].push_back(u);
        }

        scanf("%d", &m);

        dfs_son(1, 0);
        dfs_top(1, 0);
        buildST(rt, 1, n);
        builded(rt, 1, n);

        for (int i=1; i<=m; i++) {
            int s, t; scanf("%d %d", &s, &t);
            add(0, idp(i), s, t);
            tto[ids[s]].push_back(idp(i));
            add(1, idp(i), s, t);
            tto[idp(i)].push_back(idt[t]);
        }
        totN=tot+tot+m;

        bool ok=1;
        for (int i=1; i<=totN; i++) {
            if (!vst[i]) {
                if (!cal(i)) { printf("No\n"); ok=0; break; }
            }
        }
        if (!ok) { continue; }
        printf("Yes\n");
    }

    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 5
Accepted

Test #1:

score: 5
Accepted
time: 0ms
memory: 26372kb

input:

1
2
1 2
2
1 2
2 1

output:

No

result:

ok single line: 'No'

Test #2:

score: 0
Accepted
time: 13ms
memory: 24268kb

input:

462
120
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52 ...

output:

No
Yes
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No
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No
No
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No
No
No
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Ye...

result:

ok 462 lines

Test #3:

score: 0
Accepted
time: 16ms
memory: 26352kb

input:

1000
120
1 2
2 3
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4 5
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52...

output:

No
No
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...

result:

ok 1000 lines

Test #4:

score: 0
Accepted
time: 0ms
memory: 24340kb

input:

20
250
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52 5...

output:

Yes
Yes
Yes
Yes
Yes
Yes
No
No
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No
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No
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No
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Yes

result:

ok 20 lines

Test #5:

score: 0
Accepted
time: 5ms
memory: 24424kb

input:

20
250
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52 5...

output:

Yes
Yes
Yes
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Yes
No
No
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No
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No
No
No
No
No
No
No
Yes

result:

ok 20 lines

Test #6:

score: 0
Accepted
time: 5ms
memory: 24440kb

input:

20
250
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52 5...

output:

Yes
Yes
Yes
Yes
Yes
Yes
No
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No
No
Yes

result:

ok 20 lines

Test #7:

score: 0
Accepted
time: 27ms
memory: 26032kb

input:

20
6000
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52 ...

output:

Yes
Yes
Yes
Yes
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Yes
No
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No
No
No
Yes

result:

ok 20 lines

Test #8:

score: 0
Accepted
time: 38ms
memory: 52876kb

input:

1
120000
1 2
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52...

output:

Yes

result:

ok single line: 'Yes'

Test #9:

score: 0
Accepted
time: 5ms
memory: 24292kb

input:

1000
21
1 2
2 3
3 4
4 5
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4
1 2
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21
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7
1 2
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1 2
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output:

Yes
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...

result:

ok 1000 lines

Test #10:

score: 0
Accepted
time: 28ms
memory: 24332kb

input:

1000
120
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52...

output:

Yes
Yes
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...

result:

ok 1000 lines

Test #11:

score: 0
Accepted
time: 84ms
memory: 57592kb

input:

1
120000
1 2
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52...

output:

Yes

result:

ok single line: 'Yes'

Test #12:

score: 0
Accepted
time: 76ms
memory: 57812kb

input:

1
120000
1 2
2 3
3 4
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52...

output:

No

result:

ok single line: 'No'

Test #13:

score: 0
Accepted
time: 120ms
memory: 62584kb

input:

1
120000
1 2
2 3
3 4
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52...

output:

No

result:

ok single line: 'No'

Test #14:

score: 0
Accepted
time: 221ms
memory: 75128kb

input:

1
120000
1 2
2 3
3 4
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45 46
46 47
47 48
48 49
49 50
50 51
51 52
52...

output:

No

result:

ok single line: 'No'

Test #15:

score: 0
Accepted
time: 101ms
memory: 65116kb

input:

1
120000
1 2
2 3
3 4
4 5
5 6
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51 52
52...

output:

Yes

result:

ok single line: 'Yes'

Test #16:

score: 0
Accepted
time: 92ms
memory: 60264kb

input:

1
120000
1 2
2 3
3 4
4 5
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39 40
40 41
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45 46
46 47
47 48
48 49
49 50
50 51
51 52
52...

output:

Yes

result:

ok single line: 'Yes'

Test #17:

score: 0
Accepted
time: 105ms
memory: 63484kb

input:

1
120000
1 2
2 3
3 4
4 5
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39 40
40 41
41 42
42 43
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44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52...

output:

Yes

result:

ok single line: 'Yes'

Test #18:

score: 0
Accepted
time: 80ms
memory: 63612kb

input:

1
120000
1 2
2 3
3 4
4 5
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6 7
7 8
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10 11
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39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52...

output:

No

result:

ok single line: 'No'

Test #19:

score: 0
Accepted
time: 98ms
memory: 64404kb

input:

1
120000
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52...

output:

No

result:

ok single line: 'No'

Test #20:

score: 0
Accepted
time: 60ms
memory: 56576kb

input:

1
120000
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52...

output:

No

result:

ok single line: 'No'

Subtask #2:

score: 5
Accepted

Test #21:

score: 5
Accepted
time: 2ms
memory: 24396kb

input:

20
250
1 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
3 23
1 24
24 25
25 26
5 26
1 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
7 42
2 43
43 44
44 45
45 46
4 46
2 47
47 48
48 49
49 50
50 51
51 52
52 53
53 54
54 55
12 55
2 56
56 57
57 58
58 59
59 ...

output:

No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
Yes

result:

ok 20 lines

Test #22:

score: 0
Accepted
time: 6ms
memory: 26292kb

input:

20
250
1 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
3 23
1 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
5 32
1 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
7 41
2 42
42 43
43 44
44 45
45 46
46 47
4 47
2 48
48 49
49 50
50 51
51 52
52 53
53 54
12 54
2 55
55 56
56 57
57 58
58 59
14 ...

output:

Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 20 lines

Test #23:

score: 0
Accepted
time: 6ms
memory: 24412kb

input:

20
250
1 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
3 24
1 25
25 26
26 27
27 28
28 29
29 30
30 31
5 31
1 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
7 39
2 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
4 48
2 49
49 50
50 51
51 52
52 53
53 54
54 55
55 56
56 57
57 58
12 58
2 59
59 ...

output:

Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No

result:

ok 20 lines

Test #24:

score: 0
Accepted
time: 6ms
memory: 24412kb

input:

20
250
1 15
15 16
16 17
17 18
18 19
19 20
3 20
1 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
5 31
1 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
7 49
2 50
50 51
51 52
52 53
53 54
54 55
55 56
56 57
57 58
4 58
2 59
59 60
60...

output:

No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 20 lines

Test #25:

score: 0
Accepted
time: 3ms
memory: 24380kb

input:

20
250
1 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
3 31
1 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
5 39
1 40
40 41
41 42
42 43
43 44
44 45
7 45
2 46
46 47
47 48
48 49
49 50
50 51
4 51
2 52
52 53
53 54
54 55
55 56
56 57
57 58
58 59
59 60
12...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 20 lines

Test #26:

score: 0
Accepted
time: 3ms
memory: 26320kb

input:

20
250
1 15
15 16
16 17
17 18
18 19
19 20
3 20
1 21
21 22
22 23
23 24
24 25
25 26
26 27
5 27
1 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
7 37
2 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
4 46
2 47
47 48
12 48
2 49
49 50
50 51
14 51
3 52
52 53
53 54
54 55
55 56
56 57
57 58
58 5...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 20 lines

Test #27:

score: 0
Accepted
time: 5ms
memory: 24416kb

input:

20
250
1 15
15 16
16 17
17 18
18 19
19 20
20 21
3 21
1 22
22 23
23 24
24 25
5 25
1 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
7 39
2 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
4 47
2 48
48 49
49 50
50 51
51 52
52 53
53 54
54 55
55 56
12 56
2 57
57 58
58 59
59 ...

output:

Yes
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes

result:

ok 20 lines

Test #28:

score: 0
Accepted
time: 5ms
memory: 26312kb

input:

17
250
1 15
15 16
16 17
17 18
18 19
19 20
20 21
3 21
1 22
22 23
23 24
24 25
25 26
26 27
27 28
5 28
1 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
7 39
2 40
40 41
41 42
4 42
2 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 53
53 54
12 54
2 55
55 56
56 57
57 58
58 59
59 ...

output:

Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 17 lines

Test #29:

score: 0
Accepted
time: 0ms
memory: 24380kb

input:

20
4
1 2
1 3
1 4
2
1 4
4 1
250
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
1 51
1 52
1 53
1 54
1 55
1 56
1 ...

output:

No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes

result:

ok 20 lines

Test #30:

score: 0
Accepted
time: 0ms
memory: 24316kb

input:

20
7
1 2
1 3
2 4
2 5
3 6
3 7
2
1 2
2 1
250
1 2
1 3
2 4
2 5
3 6
3 7
4 8
4 9
5 10
5 11
6 12
6 13
7 14
7 15
8 16
8 17
9 18
9 19
10 20
10 21
11 22
11 23
12 24
12 25
13 26
13 27
14 28
14 29
15 30
15 31
16 32
16 33
17 34
17 35
18 36
18 37
19 38
19 39
20 40
20 41
21 42
21 43
22 44
22 45
23 46
23 47
24 48
2...

output:

No
No
Yes
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes

result:

ok 20 lines

Subtask #3:

score: 16
Accepted

Dependency #2:

100%
Accepted

Test #31:

score: 16
Accepted
time: 5ms
memory: 26360kb

input:

20
250
1 2
1 3
3 4
2 5
4 6
6 7
1 8
6 9
8 10
7 11
4 12
11 13
8 14
14 15
1 16
15 17
17 18
11 19
2 20
13 21
2 22
2 23
12 24
14 25
22 26
23 27
12 28
17 29
22 30
30 31
14 32
10 33
5 34
15 35
26 36
10 37
21 38
22 39
2 40
31 41
20 42
22 43
43 44
26 45
36 46
5 47
10 48
45 49
15 50
34 51
49 52
15 53
3 54
28 ...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 20 lines

Test #32:

score: 0
Accepted
time: 0ms
memory: 24384kb

input:

20
250
1 2
2 3
3 4
2 5
3 6
5 7
6 8
8 9
9 10
9 11
9 12
9 13
13 14
12 15
13 16
13 17
15 18
15 19
19 20
17 21
21 22
19 23
21 24
21 25
23 26
25 27
26 28
26 29
28 30
30 31
28 32
29 33
32 34
32 35
32 36
35 37
35 38
37 39
37 40
38 41
39 42
40 43
41 44
43 45
45 46
45 47
44 48
48 49
47 50
47 51
50 52
49 53
5...

output:

Yes
No
No
No
Yes
No
No
Yes
No
No
Yes
No
No
No
Yes
Yes
No
Yes
No
No

result:

ok 20 lines

Test #33:

score: 0
Accepted
time: 0ms
memory: 24292kb

input:

20
15
1 2
1 3
3 4
4 5
2 6
6 7
5 8
6 9
9 10
8 11
8 12
11 13
12 14
13 15
3
15 14
14 10
10 7
15
1 2
1 3
1 4
2 5
2 6
6 7
6 8
8 9
8 10
9 11
10 12
11 13
11 14
14 15
3
3 7
4 15
12 3
15
1 2
1 3
3 4
1 5
4 6
6 7
5 8
8 9
7 10
10 11
8 12
9 13
12 14
14 15
3
13 11
2 15
15 13
15
1 2
1 3
1 4
4 5
4 6
3 7
7 8
8 9
6 1...

output:

Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No

result:

ok 20 lines

Test #34:

score: 0
Accepted
time: 0ms
memory: 24376kb

input:

20
250
1 2
2 3
1 4
1 5
3 6
5 7
5 8
5 9
8 10
7 11
8 12
12 13
10 14
12 15
12 16
13 17
14 18
15 19
19 20
20 21
21 22
19 23
20 24
23 25
25 26
23 27
26 28
27 29
28 30
27 31
29 32
32 33
30 34
32 35
34 36
36 37
36 38
37 39
38 40
39 41
41 42
40 43
43 44
41 45
44 46
44 47
47 48
46 49
47 50
47 51
49 52
49 53
...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
No
No
Yes
Yes
No
No
Yes

result:

ok 20 lines

Test #35:

score: 0
Accepted
time: 3ms
memory: 26352kb

input:

20
250
1 2
2 3
2 4
4 5
3 6
6 7
6 8
6 9
9 10
9 11
9 12
12 13
11 14
12 15
15 16
14 17
17 18
18 19
17 20
18 21
19 22
21 23
21 24
22 25
25 26
26 27
26 28
28 29
29 30
28 31
30 32
32 33
31 34
32 35
34 36
34 37
35 38
36 39
38 40
40 41
41 42
41 43
42 44
44 45
43 46
44 47
47 48
48 49
49 50
48 51
50 52
52 53
...

output:

Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
No
Yes
No
Yes
No
No
No
Yes
No
Yes

result:

ok 20 lines

Test #36:

score: 0
Accepted
time: 5ms
memory: 26432kb

input:

20
250
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
1 51
1 52
1 53
1 54
1 55
1 56
1 57
1 58
1 59
1 60
1 61
1...

output:

No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 20 lines

Test #37:

score: 0
Accepted
time: 4ms
memory: 26320kb

input:

20
12
1 2
2 3
2 4
4 5
1 6
7 8
8 9
8 10
10 11
7 12
1 7
6
1 12
2 11
3 10
4 9
5 8
6 7
12
1 2
1 3
1 4
1 5
1 6
7 8
7 9
7 10
7 11
7 12
1 7
6
1 8
2 7
3 9
4 12
5 11
6 10
12
1 2
2 3
1 4
1 5
4 6
7 8
8 9
7 10
7 11
10 12
1 7
6
1 9
2 8
3 11
4 10
5 12
6 7
12
1 2
2 3
2 4
2 5
1 6
7 8
8 9
8 10
8 11
7 12
1 7
6
1 9
2 ...

output:

Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No

result:

ok 20 lines

Test #38:

score: 0
Accepted
time: 2ms
memory: 24356kb

input:

20
7
1 5
1 4
1 7
1 3
1 6
1 2
5
3 5
6 3
2 4
4 6
7 2
7
2 6
2 5
2 7
2 4
1 2
2 3
6
5 7
3 1
7 3
6 4
1 6
4 5
7
1 6
1 7
1 5
1 2
1 4
1 3
6
6 4
2 3
7 6
5 2
4 5
3 7
7
2 7
4 7
6 7
1 7
3 7
5 7
5
1 3
7 6
3 5
4 2
5 4
7
2 7
6 7
5 7
1 7
3 7
4 7
6
6 1
7 2
2 3
3 4
5 6
4 5
13
1 5
1 11
6 8
5 13
2 7
4 9
5 7
3 5
5 8
3 10...

output:

Yes
No
No
Yes
No
Yes
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes

result:

ok 20 lines

Test #39:

score: 0
Accepted
time: 2ms
memory: 24380kb

input:

20
246
114 183
25 82
127 221
7 59
176 220
155 244
15 67
52 230
191 222
92 127
81 103
13 61
103 110
75 80
126 141
135 187
60 192
79 151
118 147
61 188
134 173
125 147
216 236
40 62
177 212
112 133
105 198
131 205
146 168
135 167
202 231
200 232
88 209
131 176
104 159
116 245
136 223
13 91
80 134
105 ...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No

result:

ok 20 lines

Test #40:

score: 0
Accepted
time: 0ms
memory: 24428kb

input:

20
23
1 2
2 3
3 4
4 5
5 6
5 7
4 8
3 9
2 10
1 11
12 13
13 14
14 15
15 16
16 17
16 18
15 19
14 20
13 21
12 22
1 23
12 23
6
11 17
10 18
9 19
8 20
7 21
6 22
23
1 2
2 3
3 4
4 5
5 6
5 7
4 8
3 9
2 10
1 11
12 13
13 14
14 15
15 16
16 17
16 18
15 19
14 20
13 21
12 22
1 23
12 23
6
11 17
10 18
9 19
8 20
7 21
6 ...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes

result:

ok 20 lines

Test #41:

score: 0
Accepted
time: 0ms
memory: 24324kb

input:

20
250
1 2
1 3
2 4
4 5
3 6
1 7
2 8
1 9
9 10
9 11
11 12
12 13
9 14
14 15
11 16
4 17
11 18
9 19
10 20
15 21
16 22
4 23
17 24
6 25
2 26
19 27
14 28
21 29
13 30
14 31
21 32
21 33
31 34
3 35
5 36
19 37
27 38
6 39
3 40
12 41
33 42
25 43
13 44
40 45
28 46
25 47
37 48
31 49
40 50
45 51
28 52
16 53
37 54
2 5...

output:

No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 20 lines

Test #42:

score: 0
Accepted
time: 0ms
memory: 26328kb

input:

20
23
1 2
2 3
3 4
4 5
5 6
5 7
4 8
3 9
2 10
1 11
12 13
13 14
14 15
15 16
16 17
16 18
15 19
14 20
13 21
12 22
1 23
12 23
6
7 18
8 22
9 21
10 20
11 19
5 16
23
1 2
2 3
3 4
4 5
5 6
5 7
4 8
3 9
2 10
1 11
12 13
13 14
14 15
15 16
16 17
16 18
15 19
14 20
13 21
12 22
1 23
12 23
6
7 18
8 22
9 21
10 20
11 19
5 ...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No

result:

ok 20 lines

Subtask #4:

score: 28
Accepted

Dependency #3:

100%
Accepted

Test #43:

score: 28
Accepted
time: 2ms
memory: 24456kb

input:

20
250
1 2
2 3
3 4
1 5
1 6
1 7
7 8
1 9
3 10
5 11
11 12
10 13
9 14
2 15
14 16
8 17
6 18
9 19
12 20
10 21
13 22
2 23
15 24
5 25
1 26
9 27
21 28
12 29
13 30
9 31
31 32
25 33
27 34
15 35
2 36
17 37
5 38
36 39
16 40
4 41
28 42
7 43
28 44
5 45
11 46
36 47
29 48
13 49
28 50
35 51
51 52
24 53
35 54
23 55
42...

output:

No
No
No
Yes
Yes
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No

result:

ok 20 lines

Test #44:

score: 0
Accepted
time: 5ms
memory: 26464kb

input:

20
250
1 2
1 3
2 4
3 5
4 6
5 7
4 8
8 9
7 10
10 11
11 12
12 13
13 14
12 15
13 16
13 17
17 18
18 19
16 20
20 21
18 22
21 23
20 24
24 25
22 26
26 27
24 28
28 29
27 30
30 31
30 32
29 33
31 34
32 35
35 36
33 37
35 38
37 39
37 40
39 41
38 42
40 43
41 44
42 45
44 46
44 47
47 48
45 49
46 50
47 51
50 52
50 5...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No

result:

ok 20 lines

Test #45:

score: 0
Accepted
time: 3ms
memory: 24340kb

input:

20
250
1 2
1 3
2 4
2 5
3 6
3 7
7 8
6 9
6 10
7 11
8 12
9 13
11 14
13 15
12 16
14 17
15 18
16 19
18 20
17 21
19 22
20 23
23 24
21 25
24 26
24 27
26 28
27 29
26 30
27 31
29 32
29 33
33 34
32 35
34 36
35 37
37 38
37 39
39 40
37 41
38 42
39 43
40 44
43 45
45 46
46 47
44 48
46 49
47 50
48 51
50 52
50 53
5...

output:

No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
Yes
Yes
No
No
No
No
No
Yes
No

result:

ok 20 lines

Test #46:

score: 0
Accepted
time: 0ms
memory: 24284kb

input:

20
250
1 2
2 3
1 4
2 5
1 6
5 7
2 8
8 9
5 10
8 11
4 12
9 13
10 14
11 15
8 16
14 17
8 18
15 19
15 20
18 21
15 22
17 23
14 24
18 25
20 26
17 27
22 28
19 29
21 30
29 31
28 32
23 33
29 34
27 35
26 36
29 37
27 38
36 39
37 40
39 41
37 42
37 43
38 44
39 45
44 46
37 47
44 48
38 49
44 50
42 51
45 52
45 53
49 ...

output:

No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
Yes
Yes
No
Yes
No
No

result:

ok 20 lines

Test #47:

score: 0
Accepted
time: 6ms
memory: 24432kb

input:

20
200
1 2
2 3
1 4
4 5
5 6
1 7
6 8
2 9
1 10
3 11
9 12
8 13
4 14
2 15
15 16
2 17
17 18
6 19
17 20
19 21
8 22
13 23
10 24
10 25
24 26
2 27
11 28
28 29
24 30
29 31
7 32
22 33
20 34
9 35
5 36
18 37
30 38
11 39
25 40
30 41
8 42
3 43
2 44
26 45
28 46
34 47
32 48
41 49
38 50
24 51
35 52
48 53
3 54
31 55
36...

output:

No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
Yes
No
Yes

result:

ok 20 lines

Test #48:

score: 0
Accepted
time: 3ms
memory: 24268kb

input:

20
200
1 2
1 3
3 4
4 5
5 6
5 7
7 8
6 9
8 10
9 11
9 12
10 13
12 14
12 15
14 16
14 17
16 18
18 19
17 20
19 21
19 22
20 23
22 24
22 25
24 26
24 27
25 28
26 29
28 30
29 31
29 32
31 33
32 34
34 35
33 36
34 37
36 38
36 39
37 40
40 41
41 42
41 43
42 44
43 45
45 46
45 47
47 48
48 49
49 50
50 51
50 52
52 53
...

output:

No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No

result:

ok 20 lines

Test #49:

score: 0
Accepted
time: 0ms
memory: 26376kb

input:

20
101
46 88
46 52
46 77
46 67
5 46
46 91
11 46
46 74
46 90
26 46
46 51
13 46
46 83
23 46
1 46
46 58
39 46
38 46
37 46
46 79
10 46
46 95
46 94
46 81
46 61
45 46
46 71
46 84
46 50
46 72
46 57
46 47
46 101
32 46
29 46
4 46
31 46
46 80
3 46
7 46
46 66
34 46
6 46
19 46
22 46
46 97
18 46
46 68
46 82
40 4...

output:

Yes
No
No
Yes
No
Yes
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No

result:

ok 20 lines

Test #50:

score: 0
Accepted
time: 3ms
memory: 24428kb

input:

20
15
1 11
14 15
9 14
8 9
9 10
11 12
6 9
2 11
2 3
6 7
1 13
4 9
5 15
2 14
7
10 11
4 14
7 9
8 2
3 1
5 13
12 15
15
10 13
1 8
4 15
1 11
3 14
1 14
3 5
9 10
3 9
4 12
7 9
2 12
1 6
1 4
7
15 1
2 4
11 9
6 14
5 10
7 13
8 3
15
7 12
2 3
8 9
2 13
1 7
4 7
1 9
9 10
9 14
3 6
1 5
2 11
1 3
14 15
7
15 9
12 11
5 3
13 4
...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 20 lines

Subtask #5:

score: 12
Accepted

Dependency #4:

100%
Accepted

Test #51:

score: 12
Accepted
time: 31ms
memory: 25884kb

input:

20
6000
1 2
1 3
2 4
4 5
5 6
5 7
1 8
3 9
3 10
8 11
1 12
7 13
3 14
1 15
10 16
9 17
13 18
13 19
7 20
20 21
21 22
14 23
11 24
7 25
22 26
23 27
9 28
20 29
15 30
8 31
23 32
3 33
33 34
22 35
20 36
26 37
21 38
21 39
1 40
4 41
34 42
17 43
14 44
7 45
13 46
43 47
4 48
19 49
42 50
4 51
12 52
29 53
29 54
12 55
5...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No

result:

ok 20 lines

Test #52:

score: 0
Accepted
time: 43ms
memory: 25896kb

input:

20
6000
1 2
2 3
2 4
3 5
4 6
4 7
5 8
6 9
6 10
10 11
10 12
2 13
13 14
5 15
15 16
12 17
12 18
18 19
1 20
5 21
12 22
19 23
9 24
14 25
17 26
17 27
13 28
1 29
13 30
9 31
27 32
15 33
28 34
25 35
33 36
12 37
2 38
37 39
5 40
25 41
34 42
17 43
40 44
38 45
14 46
2 47
31 48
42 49
18 50
45 51
44 52
35 53
14 54
1...

output:

Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
No
No
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes

result:

ok 20 lines

Test #53:

score: 0
Accepted
time: 33ms
memory: 26024kb

input:

20
6000
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
1 51
1 52
1 53
1 54
1 55
1 56
1 57
1 58
1 59
1 60
1 61
...

output:

No
No
No
No
No
No
No
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes

result:

ok 20 lines

Test #54:

score: 0
Accepted
time: 20ms
memory: 25436kb

input:

20
6000
1 2
2 3
3 4
4 5
2 6
5 7
5 8
6 9
6 10
9 11
10 12
12 13
10 14
14 15
15 16
13 17
15 18
15 19
19 20
17 21
21 22
19 23
23 24
23 25
22 26
26 27
25 28
26 29
29 30
28 31
29 32
30 33
30 34
32 35
32 36
36 37
37 38
38 39
36 40
37 41
40 42
39 43
43 44
43 45
45 46
43 47
46 48
47 49
47 50
50 51
48 52
50 5...

output:

Yes
Yes
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
Yes
Yes
No
No
No

result:

ok 20 lines

Test #55:

score: 0
Accepted
time: 11ms
memory: 24632kb

input:

20
1000
1 2
2 3
1 4
3 5
4 6
6 7
1 8
1 9
9 10
1 11
6 12
1 13
1 14
14 15
12 16
10 17
1 18
11 19
10 20
14 21
18 22
2 23
2 24
7 25
17 26
24 27
4 28
28 29
8 30
30 31
3 32
28 33
28 34
34 35
5 36
25 37
32 38
7 39
31 40
26 41
29 42
33 43
27 44
34 45
18 46
19 47
23 48
29 49
29 50
21 51
19 52
52 53
19 54
48 5...

output:

No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No

result:

ok 20 lines

Test #56:

score: 0
Accepted
time: 39ms
memory: 42640kb

input:

1
120000
1 2
2 3
3 4
3 5
5 6
3 7
3 8
2 9
2 10
7 11
3 12
3 13
9 14
11 15
9 16
6 17
13 18
18 19
6 20
1 21
12 22
8 23
5 24
12 25
7 26
8 27
4 28
21 29
3 30
21 31
13 32
2 33
28 34
33 35
21 36
31 37
1 38
22 39
9 40
34 41
2 42
22 43
5 44
34 45
35 46
8 47
22 48
20 49
2 50
42 51
23 52
30 53
26 54
17 55
40 56...

output:

No

result:

ok single line: 'No'

Test #57:

score: 0
Accepted
time: 57ms
memory: 43468kb

input:

1
120000
1 2
2 3
2 4
4 5
3 6
1 7
5 8
4 9
5 10
4 11
9 12
12 13
5 14
9 15
10 16
1 17
10 18
3 19
5 20
8 21
9 22
12 23
17 24
9 25
2 26
19 27
1 28
12 29
6 30
20 31
3 32
9 33
12 34
27 35
27 36
20 37
16 38
6 39
29 40
24 41
26 42
26 43
22 44
13 45
11 46
24 47
23 48
7 49
37 50
44 51
27 52
14 53
27 54
25 55
5...

output:

Yes

result:

ok single line: 'Yes'

Test #58:

score: 0
Accepted
time: 45ms
memory: 48040kb

input:

1
120000
1 2
1 3
2 4
2 5
4 6
4 7
5 8
6 9
8 10
8 11
10 12
10 13
13 14
12 15
13 16
14 17
17 18
16 19
18 20
20 21
21 22
20 23
22 24
22 25
23 26
24 27
25 28
27 29
27 30
30 31
31 32
32 33
33 34
34 35
35 36
34 37
36 38
36 39
37 40
38 41
40 42
41 43
43 44
42 45
43 46
44 47
47 48
47 49
49 50
49 51
50 52
50 ...

output:

Yes

result:

ok single line: 'Yes'

Test #59:

score: 0
Accepted
time: 42ms
memory: 48140kb

input:

1
120000
1 2
1 3
2 4
2 5
3 6
6 7
5 8
6 9
9 10
9 11
10 12
11 13
13 14
13 15
15 16
15 17
15 18
18 19
18 20
20 21
19 22
22 23
23 24
23 25
25 26
26 27
25 28
28 29
27 30
29 31
29 32
32 33
31 34
34 35
33 36
36 37
35 38
36 39
38 40
38 41
40 42
42 43
43 44
44 45
45 46
45 47
46 48
46 49
49 50
49 51
50 52
50 ...

output:

Yes

result:

ok single line: 'Yes'

Test #60:

score: 0
Accepted
time: 32ms
memory: 43180kb

input:

1
120000
1 2
2 3
2 4
3 5
5 6
4 7
1 8
6 9
2 10
1 11
9 12
1 13
11 14
6 15
3 16
11 17
7 18
18 19
18 20
6 21
3 22
12 23
20 24
4 25
18 26
11 27
15 28
10 29
10 30
5 31
12 32
13 33
15 34
26 35
24 36
4 37
16 38
32 39
36 40
17 41
11 42
33 43
19 44
18 45
16 46
38 47
10 48
6 49
36 50
37 51
51 52
7 53
20 54
9 5...

output:

No

result:

ok single line: 'No'

Test #61:

score: 0
Accepted
time: 42ms
memory: 43832kb

input:

1
120000
1 2
1 3
3 4
1 5
5 6
4 7
6 8
3 9
1 10
9 11
10 12
3 13
13 14
4 15
3 16
16 17
7 18
6 19
18 20
3 21
10 22
15 23
7 24
14 25
24 26
20 27
27 28
13 29
2 30
29 31
28 32
20 33
31 34
24 35
33 36
30 37
35 38
1 39
23 40
32 41
31 42
37 43
34 44
7 45
2 46
25 47
39 48
10 49
36 50
50 51
1 52
40 53
9 54
19 5...

output:

Yes

result:

ok single line: 'Yes'

Test #62:

score: 0
Accepted
time: 39ms
memory: 44988kb

input:

1
120000
1 2
2 3
3 4
2 5
5 6
2 7
6 8
5 9
9 10
2 11
6 12
8 13
9 14
9 15
12 16
7 17
11 18
11 19
11 20
13 21
19 22
20 23
23 24
18 25
18 26
20 27
25 28
24 29
27 30
22 31
24 32
31 33
24 34
25 35
28 36
34 37
28 38
30 39
34 40
32 41
38 42
33 43
39 44
40 45
41 46
44 47
43 48
43 49
42 50
42 51
42 52
45 53
47...

output:

Yes

result:

ok single line: 'Yes'

Test #63:

score: 0
Accepted
time: 36ms
memory: 45000kb

input:

1
120000
1 2
2 3
2 4
4 5
1 6
6 7
3 8
1 9
2 10
5 11
8 12
12 13
5 14
8 15
14 16
15 17
7 18
18 19
14 20
10 21
12 22
22 23
23 24
24 25
23 26
24 27
25 28
27 29
20 30
24 31
30 32
23 33
24 34
34 35
31 36
34 37
36 38
38 39
31 40
33 41
38 42
35 43
37 44
39 45
38 46
41 47
37 48
39 49
48 50
43 51
47 52
51 53
4...

output:

No

result:

ok single line: 'No'

Test #64:

score: 0
Accepted
time: 14ms
memory: 27888kb

input:

20
501
190 352
328 352
288 352
304 352
9 352
307 352
352 385
352 499
221 352
309 352
137 352
223 352
142 352
8 352
270 352
229 352
265 352
228 352
218 352
19 352
259 352
199 352
267 352
344 352
85 352
166 352
156 352
99 352
352 489
281 352
121 352
83 352
14 352
352 384
352 455
352 403
186 352
330 35...

output:

Yes
No
No
Yes
No
Yes
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 20 lines

Test #65:

score: 0
Accepted
time: 49ms
memory: 43584kb

input:

1
120000
9596 32034
82692 85993
30880 60468
22127 89935
44536 51056
29638 71986
57153 103961
11021 66919
65177 96684
4542 48982
10457 21422
10762 52690
76467 105536
31498 46755
48690 82310
13509 118283
15463 106906
7541 66632
74654 103950
58261 68753
15087 48231
31649 96398
69483 90580
36955 85619
2...

output:

Yes

result:

ok single line: 'Yes'

Subtask #6:

score: 11
Accepted

Test #66:

score: 11
Accepted
time: 21ms
memory: 24292kb

input:

1000
10
1 2
2 3
1 4
4 5
4 6
4 7
2 8
8 9
3 10
2
5 4
1 9
10
1 2
1 3
1 4
4 5
4 6
3 7
3 8
2 9
6 10
2
2 9
1 5
10
1 2
2 3
1 4
4 5
4 6
2 7
3 8
2 9
1 10
2
10 2
7 5
10
1 2
1 3
1 4
2 5
1 6
3 7
2 8
7 9
2 10
2
10 5
2 7
10
1 2
1 3
1 4
3 5
5 6
3 7
7 8
1 9
8 10
2
6 7
1 2
10
1 2
1 3
3 4
2 5
4 6
3 7
1 8
4 9
1 10
2
1...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
No
No
No
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
...

result:

ok 1000 lines

Test #67:

score: 0
Accepted
time: 36ms
memory: 26428kb

input:

1000
120
1 2
2 3
1 4
1 5
2 6
3 7
3 8
3 9
6 10
4 11
8 12
6 13
1 14
6 15
11 16
3 17
17 18
5 19
1 20
16 21
18 22
21 23
14 24
20 25
6 26
13 27
4 28
23 29
29 30
2 31
14 32
18 33
9 34
13 35
17 36
2 37
7 38
20 39
26 40
22 41
37 42
30 43
43 44
42 45
9 46
43 47
29 48
9 49
45 50
49 51
48 52
9 53
20 54
9 55
5 ...

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Y...

result:

ok 1000 lines

Test #68:

score: 0
Accepted
time: 25ms
memory: 24388kb

input:

1000
120
1 2
2 3
1 4
1 5
3 6
1 7
7 8
2 9
1 10
5 11
5 12
7 13
4 14
11 15
10 16
15 17
10 18
1 19
18 20
8 21
14 22
4 23
8 24
9 25
5 26
20 27
9 28
11 29
19 30
8 31
6 32
30 33
2 34
14 35
30 36
3 37
11 38
17 39
14 40
39 41
18 42
36 43
37 44
29 45
32 46
42 47
29 48
16 49
3 50
47 51
16 52
3 53
36 54
24 55
5...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
...

result:

ok 1000 lines

Test #69:

score: 0
Accepted
time: 83ms
memory: 45124kb

input:

1
120000
1 2
1 3
3 4
4 5
1 6
5 7
7 8
4 9
7 10
4 11
7 12
10 13
5 14
6 15
15 16
3 17
15 18
1 19
10 20
2 21
18 22
16 23
12 24
23 25
2 26
12 27
8 28
5 29
12 30
30 31
23 32
7 33
16 34
25 35
5 36
8 37
19 38
6 39
30 40
4 41
33 42
27 43
43 44
27 45
44 46
22 47
26 48
29 49
29 50
28 51
9 52
20 53
41 54
1 55
4...

output:

No

result:

ok single line: 'No'

Test #70:

score: 0
Accepted
time: 239ms
memory: 52688kb

input:

1
120000
1 2
2 3
2 4
4 5
4 6
6 7
6 8
4 9
7 10
3 11
8 12
11 13
5 14
13 15
4 16
2 17
9 18
4 19
12 20
7 21
7 22
7 23
13 24
18 25
1 26
21 27
5 28
16 29
9 30
30 31
29 32
24 33
9 34
27 35
16 36
5 37
36 38
10 39
5 40
16 41
27 42
41 43
24 44
26 45
7 46
44 47
30 48
33 49
42 50
11 51
5 52
38 53
13 54
43 55
19...

output:

No

result:

ok single line: 'No'

Test #71:

score: 0
Accepted
time: 424ms
memory: 62360kb

input:

1
120000
1 2
1 3
2 4
3 5
3 6
2 7
3 8
4 9
5 10
2 11
3 12
9 13
12 14
1 15
13 16
2 17
11 18
10 19
14 20
1 21
20 22
8 23
9 24
20 25
13 26
13 27
19 28
10 29
26 30
4 31
25 32
28 33
30 34
26 35
35 36
17 37
21 38
28 39
39 40
1 41
26 42
26 43
26 44
42 45
44 46
23 47
11 48
29 49
32 50
10 51
25 52
50 53
36 54
...

output:

No

result:

ok single line: 'No'

Test #72:

score: 0
Accepted
time: 130ms
memory: 46624kb

input:

1
120000
1 2
2 3
2 4
2 5
5 6
5 7
1 8
2 9
9 10
9 11
3 12
11 13
4 14
3 15
5 16
10 17
17 18
6 19
13 20
7 21
2 22
11 23
13 24
18 25
23 26
6 27
22 28
24 29
2 30
24 31
30 32
6 33
16 34
31 35
30 36
31 37
6 38
38 39
32 40
19 41
41 42
31 43
39 44
40 45
45 46
7 47
11 48
8 49
49 50
6 51
38 52
17 53
28 54
12 55...

output:

Yes

result:

ok single line: 'Yes'

Test #73:

score: 0
Accepted
time: 111ms
memory: 46900kb

input:

1
120000
1 2
1 3
3 4
1 5
5 6
5 7
3 8
6 9
2 10
5 11
2 12
7 13
6 14
10 15
2 16
13 17
7 18
14 19
10 20
12 21
6 22
4 23
19 24
13 25
16 26
16 27
15 28
12 29
15 30
27 31
17 32
29 33
1 34
1 35
1 36
36 37
4 38
38 39
18 40
14 41
21 42
13 43
25 44
43 45
36 46
4 47
40 48
6 49
42 50
10 51
29 52
12 53
22 54
28 5...

output:

No

result:

ok single line: 'No'

Test #74:

score: 0
Accepted
time: 137ms
memory: 46848kb

input:

1
120000
1 2
2 3
1 4
1 5
4 6
6 7
5 8
1 9
5 10
9 11
1 12
8 13
10 14
6 15
15 16
13 17
1 18
11 19
9 20
7 21
4 22
5 23
4 24
12 25
18 26
17 27
1 28
23 29
11 30
18 31
27 32
19 33
21 34
19 35
23 36
1 37
32 38
38 39
27 40
36 41
41 42
30 43
39 44
34 45
18 46
34 47
28 48
35 49
2 50
43 51
17 52
4 53
41 54
41 5...

output:

Yes

result:

ok single line: 'Yes'

Test #75:

score: 0
Accepted
time: 228ms
memory: 52612kb

input:

1
120000
1 2
1 3
1 4
2 5
1 6
4 7
6 8
2 9
9 10
1 11
10 12
9 13
12 14
4 15
1 16
9 17
13 18
10 19
6 20
8 21
6 22
12 23
11 24
19 25
1 26
9 27
20 28
24 29
6 30
13 31
17 32
23 33
23 34
6 35
25 36
36 37
17 38
3 39
18 40
4 41
8 42
17 43
8 44
21 45
21 46
21 47
5 48
4 49
17 50
22 51
14 52
18 53
49 54
30 55
29...

output:

No

result:

ok single line: 'No'

Test #76:

score: 0
Accepted
time: 175ms
memory: 52476kb

input:

1
120000
1 2
2 3
2 4
2 5
3 6
1 7
6 8
3 9
9 10
2 11
1 12
8 13
7 14
13 15
3 16
4 17
14 18
9 19
15 20
4 21
19 22
5 23
20 24
12 25
9 26
20 27
3 28
20 29
4 30
18 31
10 32
32 33
17 34
25 35
19 36
28 37
8 38
10 39
7 40
6 41
24 42
21 43
25 44
37 45
23 46
32 47
36 48
40 49
46 50
30 51
9 52
31 53
27 54
1 55
2...

output:

No

result:

ok single line: 'No'

Test #77:

score: 0
Accepted
time: 199ms
memory: 53016kb

input:

1
120000
1 2
1 3
1 4
1 5
3 6
4 7
4 8
6 9
7 10
10 11
7 12
2 13
9 14
6 15
8 16
3 17
17 18
15 19
10 20
9 21
10 22
13 23
21 24
20 25
3 26
1 27
6 28
25 29
14 30
16 31
2 32
17 33
20 34
9 35
14 36
21 37
23 38
17 39
19 40
11 41
4 42
17 43
37 44
34 45
32 46
25 47
27 48
21 49
18 50
4 51
14 52
34 53
40 54
48 5...

output:

Yes

result:

ok single line: 'Yes'

Test #78:

score: 0
Accepted
time: 183ms
memory: 52792kb

input:

1
120000
1 2
2 3
3 4
3 5
5 6
1 7
4 8
3 9
8 10
9 11
6 12
9 13
8 14
5 15
8 16
10 17
13 18
18 19
6 20
18 21
5 22
16 23
1 24
24 25
7 26
20 27
18 28
27 29
20 30
10 31
6 32
14 33
8 34
6 35
34 36
23 37
14 38
9 39
19 40
32 41
26 42
3 43
3 44
6 45
29 46
21 47
20 48
32 49
33 50
29 51
49 52
41 53
44 54
20 55
8...

output:

No

result:

ok single line: 'No'

Test #79:

score: 0
Accepted
time: 192ms
memory: 52908kb

input:

1
120000
1 2
1 3
2 4
2 5
2 6
1 7
4 8
7 9
8 10
4 11
2 12
12 13
8 14
5 15
6 16
14 17
2 18
4 19
15 20
10 21
10 22
21 23
7 24
13 25
17 26
13 27
5 28
24 29
12 30
25 31
12 32
17 33
29 34
10 35
5 36
2 37
18 38
32 39
12 40
38 41
3 42
15 43
29 44
28 45
5 46
25 47
34 48
23 49
19 50
8 51
49 52
38 53
19 54
26 5...

output:

Yes

result:

ok single line: 'Yes'

Test #80:

score: 0
Accepted
time: 186ms
memory: 57264kb

input:

1
120000
11991 50256
11991 84876
11991 45905
11991 51568
11991 91200
11991 42928
11991 113754
8591 11991
11991 39222
11991 41683
11991 14143
11991 39036
11991 17920
11991 31807
11991 94372
11160 11991
11991 91065
11991 40582
11991 70878
11991 41750
11991 33677
11991 108658
11991 28168
11991 39793
11...

output:

Yes

result:

ok single line: 'Yes'

Test #81:

score: 0
Accepted
time: 189ms
memory: 57800kb

input:

1
120000
18188 106790
18188 54059
18188 89312
1977 18188
18188 28194
18188 65674
18188 101181
18188 24303
17901 18188
18188 89721
18188 73511
2884 18188
18188 77276
4949 18188
18188 24043
18188 39177
18188 112466
7926 18188
18188 71531
18188 35382
18188 19597
18188 88563
7163 18188
18188 117028
1818...

output:

No

result:

ok single line: 'No'

Test #82:

score: 0
Accepted
time: 138ms
memory: 52392kb

input:

1
120000
88901 93340
53582 88901
17631 88901
88901 112891
49610 88901
66056 88901
37119 88901
13628 88901
76827 88901
88901 113073
35676 88901
88901 119510
48422 88901
87908 88901
45477 88901
31754 88901
7989 88901
56079 88901
11230 88901
79317 88901
88901 118351
7557 88901
5525 88901
36133 88901
38...

output:

No

result:

ok single line: 'No'

Test #83:

score: 0
Accepted
time: 124ms
memory: 50548kb

input:

1
119999
25598 38818
90634 115889
12633 50464
69321 90502
61890 69321
50833 62180
44063 110322
56990 71717
69321 97043
9004 31721
72739 99897
70071 77183
1641 5950
11923 22839
85938 113668
44393 113227
57650 106543
62003 110244
2984 69321
69321 74070
31878 69321
53020 85766
21247 69321
9380 71862
26...

output:

Yes

result:

ok single line: 'Yes'

Test #84:

score: 0
Accepted
time: 122ms
memory: 51208kb

input:

1
119999
13044 22298
36898 57927
71259 116062
13044 72264
33247 118187
48341 93486
48634 70190
88330 108870
24718 65527
13044 13377
7808 77099
29483 111980
52095 97954
13044 28310
13044 88491
13044 73275
108092 110305
13044 76937
13044 55663
13044 39070
51360 65292
13044 109934
45068 89262
5748 1775...

output:

No

result:

ok single line: 'No'

Test #85:

score: 0
Accepted
time: 125ms
memory: 49076kb

input:

1
119999
35328 94869
90311 115735
74625 115735
73760 108911
7771 115735
104915 115735
21124 89210
103290 115735
115735 117754
87997 119165
55414 115735
65186 86428
29392 115735
47518 71428
115735 119115
106540 112998
7327 115735
41944 115735
37454 115735
30208 50594
8164 11521
42835 99431
101819 119...

output:

Yes

result:

ok single line: 'Yes'

Test #86:

score: 0
Accepted
time: 129ms
memory: 50848kb

input:

1
119999
41911 92600
40028 45987
45987 108241
60151 76109
45987 80553
45987 102943
17209 65161
19179 45987
45987 117820
45987 47874
75073 94327
31981 36446
22706 78045
5600 45987
18295 45987
45987 64839
4384 45987
45987 63427
59905 97176
45987 102843
45987 77142
32336 94133
6104 26212
27469 112582
4...

output:

No

result:

ok single line: 'No'

Subtask #7:

score: 23
Accepted

Dependency #1:

100%
Accepted

Dependency #2:

100%
Accepted

Dependency #3:

100%
Accepted

Dependency #4:

100%
Accepted

Dependency #5:

100%
Accepted

Dependency #6:

100%
Accepted

Test #87:

score: 23
Accepted
time: 32ms
memory: 24400kb

input:

1000
10
1 2
1 3
2 4
4 5
1 6
2 7
3 8
6 9
8 10
2
5 10
2 3
10
1 2
2 3
2 4
4 5
4 6
3 7
1 8
4 9
2 10
2
10 9
5 7
10
1 2
1 3
3 4
3 5
2 6
4 7
3 8
7 9
4 10
2
9 3
4 8
10
1 2
1 3
3 4
3 5
2 6
3 7
2 8
7 9
8 10
2
10 4
6 8
10
1 2
2 3
3 4
1 5
4 6
3 7
2 8
6 9
5 10
2
3 2
6 3
10
1 2
1 3
3 4
1 5
5 6
2 7
7 8
3 9
2 10
2
...

output:

No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
Yes
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Ye...

result:

ok 1000 lines

Test #88:

score: 0
Accepted
time: 16ms
memory: 24332kb

input:

800
120
1 2
1 3
2 4
4 5
3 6
3 7
4 8
5 9
9 10
10 11
10 12
9 13
10 14
11 15
12 16
13 17
17 18
17 19
18 20
17 21
21 22
22 23
21 24
23 25
23 26
25 27
27 28
28 29
29 30
29 31
31 32
31 33
32 34
34 35
35 36
34 37
35 38
38 39
38 40
39 41
40 42
41 43
42 44
43 45
45 46
44 47
45 48
45 49
48 50
48 51
51 52
49 5...

output:

No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No...

result:

ok 800 lines

Test #89:

score: 0
Accepted
time: 162ms
memory: 59540kb

input:

1
120000
1 2
1 3
1 4
4 5
4 6
6 7
7 8
8 9
9 10
9 11
10 12
11 13
13 14
14 15
15 16
16 17
15 18
16 19
19 20
18 21
19 22
20 23
22 24
24 25
25 26
24 27
27 28
28 29
27 30
29 31
30 32
30 33
32 34
34 35
34 36
36 37
37 38
38 39
38 40
38 41
41 42
40 43
43 44
42 45
44 46
44 47
47 48
47 49
48 50
49 51
51 52
52 ...

output:

No

result:

ok single line: 'No'

Test #90:

score: 0
Accepted
time: 93ms
memory: 52112kb

input:

1
120000
1 2
1 3
3 4
3 5
3 6
5 7
6 8
7 9
9 10
8 11
9 12
10 13
13 14
13 15
15 16
15 17
16 18
18 19
19 20
20 21
20 22
22 23
23 24
24 25
23 26
26 27
27 28
28 29
27 30
28 31
29 32
31 33
31 34
34 35
34 36
36 37
36 38
38 39
37 40
38 41
39 42
42 43
41 44
44 45
45 46
44 47
45 48
48 49
48 50
48 51
50 52
51 5...

output:

Yes

result:

ok single line: 'Yes'

Test #91:

score: 0
Accepted
time: 118ms
memory: 55700kb

input:

1
120000
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
1 51
1 52
1 53
1 54
1 55
1 56
1 57
1 58
1 59
1 60
1 61...

output:

No

result:

ok single line: 'No'

Test #92:

score: 0
Accepted
time: 35ms
memory: 43736kb

input:

1
120000
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
1 51
1 52
1 53
1 54
1 55
1 56
1 57
1 58
1 59
1 60
1 61...

output:

Yes

result:

ok single line: 'Yes'

Test #93:

score: 0
Accepted
time: 106ms
memory: 47624kb

input:

1
119999
70469 99143
16873 47858
9183 74783
23127 35608
20869 67057
13987 54887
32438 79640
7968 103514
90902 103871
972 57706
5598 21618
14192 66650
22858 68904
13024 58854
92846 95558
41561 69342
26765 58042
37250 88739
58169 95984
11676 60837
80130 92441
22650 46583
35536 95867
92019 112282
91195...

output:

Yes

result:

ok single line: 'Yes'

Test #94:

score: 0
Accepted
time: 642ms
memory: 72832kb

input:

1
120000
25156 34477
10715 65847
49587 115425
74758 115038
53099 68831
23261 42871
53891 76238
28706 43443
71501 106462
6685 79072
2017 98160
17209 107357
30856 82298
45194 87405
51195 86447
32653 49142
3693 74407
23546 69698
2422 90463
11872 56423
25292 76680
5861 48314
5276 64965
1271 90020
52018 ...

output:

No

result:

ok single line: 'No'

Test #95:

score: 0
Accepted
time: 60ms
memory: 43548kb

input:

1
120000
72239 107238
80278 100093
37710 82865
22639 77476
13945 63629
30079 60294
34114 87516
10776 72676
85909 94342
48342 69393
50019 69472
39250 116307
7938 67051
37189 113042
62668 119999
69448 102244
24902 98397
76326 97075
16290 102165
33593 58512
8127 26289
9224 72454
29503 101273
96765 1158...

output:

Yes

result:

ok single line: 'Yes'

Test #96:

score: 0
Accepted
time: 56ms
memory: 43584kb

input:

1
120000
74756 109551
71920 90535
54533 85191
38683 41935
31104 107478
58532 119063
47934 88396
34828 61337
30321 67341
14588 75823
18000 65835
86460 113918
9600 104309
11799 75533
86806 106416
22474 94346
19652 88883
39905 67299
23984 108622
75920 109621
45416 94615
45403 56730
58439 85962
32189 84...

output:

No

result:

ok single line: 'No'

Test #97:

score: 0
Accepted
time: 12ms
memory: 28280kb

input:

1
9999
185 9957
1715 5500
2519 7814
711 9809
7405 9558
204 9025
2893 3714
3530 6418
2788 5224
1709 7347
2058 9102
2221 3425
5850 8822
2665 4330
380 2193
1087 2550
5357 7777
3611 9375
3952 7528
872 6213
6173 6438
4343 5353
1913 6981
5054 6916
3070 6083
2802 7960
2827 4077
2349 7926
2133 6340
1708 977...

output:

Yes

result:

ok single line: 'Yes'

Test #98:

score: 0
Accepted
time: 169ms
memory: 48820kb

input:

1
119999
52081 90449
46374 87819
34295 60980
31405 64625
82099 112907
81592 106466
7995 65412
47309 88640
83549 99283
16691 90893
60307 66153
15241 40723
66830 98587
16764 59040
81169 110857
1963 72980
64470 74475
26658 94239
10310 55681
47199 74597
33307 92295
7807 79530
64608 106788
86239 108891
1...

output:

Yes

result:

ok single line: 'Yes'

Test #99:

score: 0
Accepted
time: 152ms
memory: 48760kb

input:

1
119999
21835 57213
83638 105517
103205 118280
41294 87811
63845 65718
51163 87281
14987 45604
8700 82563
66374 109916
892 55330
108327 117663
64744 113066
19173 55205
42014 93615
30220 85806
47252 47299
51529 63650
20090 46794
45388 95627
20136 96674
9518 65430
26929 90338
61915 85491
61820 111921...

output:

Yes

result:

ok single line: 'Yes'

Test #100:

score: 0
Accepted
time: 105ms
memory: 54312kb

input:

1
120000
1 2
2 3
2 4
4 5
5 6
5 7
6 8
7 9
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9 11
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12 13
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38 40
39 41
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45 47
47 48
48 49
49 50
49 51
50 52
51 ...

output:

Yes

result:

ok single line: 'Yes'

Test #101:

score: 0
Accepted
time: 90ms
memory: 53856kb

input:

1
120000
1 2
1 3
2 4
4 5
5 6
5 7
6 8
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9 11
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39 40
39 41
40 42
42 43
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45 46
45 47
47 48
48 49
49 50
49 51
51 52
51 ...

output:

No

result:

ok single line: 'No'

Test #102:

score: 0
Accepted
time: 105ms
memory: 54876kb

input:

1
120000
1 2
1 3
2 4
3 5
4 6
5 7
6 8
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9 11
10 12
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39 40
39 41
40 42
42 43
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44 45
44 46
46 47
46 48
47 49
48 50
50 51
51 52
52 ...

output:

No

result:

ok single line: 'No'

Test #103:

score: 0
Accepted
time: 248ms
memory: 73008kb

input:

1
120000
1 2
2 3
2 4
4 5
4 6
6 7
7 8
7 9
8 10
9 11
11 12
12 13
13 14
13 15
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38 39
39 40
40 41
40 42
41 43
43 44
43 45
44 46
45 47
47 48
48 49
49 50
50 51
51 52
51 ...

output:

No

result:

ok single line: 'No'

Test #104:

score: 0
Accepted
time: 134ms
memory: 62688kb

input:

1
120000
1 2
1 3
3 4
3 5
5 6
6 7
6 8
8 9
8 10
9 11
11 12
11 13
12 14
14 15
14 16
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37 39
39 40
39 41
40 42
42 43
43 44
43 45
44 46
46 47
47 48
47 49
49 50
49 51
50 52
51 ...

output:

No

result:

ok single line: 'No'

Test #105:

score: 0
Accepted
time: 101ms
memory: 64320kb

input:

1
120000
1 2
2 3
2 4
4 5
5 6
6 7
7 8
7 9
8 10
9 11
10 12
11 13
12 14
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38 39
39 40
40 41
41 42
42 43
42 44
44 45
44 46
46 47
47 48
47 49
49 50
49 51
51 52
51 ...

output:

No

result:

ok single line: 'No'

Test #106:

score: 0
Accepted
time: 119ms
memory: 63340kb

input:

1
120000
1 2
1 3
3 4
4 5
5 6
5 7
7 8
8 9
9 10
9 11
11 12
11 13
13 14
14 15
15 16
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37 39
39 40
40 41
41 42
42 43
42 44
43 45
45 46
45 47
47 48
47 49
48 50
50 51
50 52
51 ...

output:

Yes

result:

ok single line: 'Yes'

Test #107:

score: 0
Accepted
time: 96ms
memory: 64056kb

input:

1
120000
1 2
2 3
2 4
4 5
5 6
6 7
7 8
7 9
8 10
10 11
10 12
12 13
12 14
13 15
14 16
16 17
17 18
17 19
18 20
20 21
20 22
22 23
22 24
23 25
24 26
25 27
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27 29
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29 31
30 32
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38 39
39 40
40 41
41 42
42 43
42 44
43 45
45 46
45 47
47 48
47 49
49 50
50 51
50 52
51...

output:

No

result:

ok single line: 'No'

Extra Test:

score: 0
Extra Test Passed