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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#108166#5307. Subgraph IsomorphismwhyAC ✓128ms11760kbC++142.3kb2023-05-23 19:02:052023-05-23 19:02:09

Judging History

你现在查看的是测评时间为 2023-05-23 19:02:09 的历史记录

  • [2023-10-15 17:25:59]
  • 管理员手动重测本题所有提交记录
  • 测评结果：AC
  • 用时：103ms
  • 内存：11732kb
查看
  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-05-23 19:02:09]
  • 评测
  • 测评结果：0
  • 用时：128ms
  • 内存：11760kb
查看
  • [2023-05-23 19:02:05]
  • 提交

answer

#include<stdio.h>
#include<algorithm>
#include<math.h>
#include<string.h>
#include<queue>
#include<stack>
#include<vector>
#include<map>
#include<set>
#include<time.h>
#include<stdlib.h>
using namespace std;

typedef unsigned long long ull;
typedef long long ll;
typedef pair<int,int> pii;
const int N=1e5+86;

int T,n,m;
struct edge{int to,nxt;}e[N<<1];
int head[N],tot;
void add(int u,int v){e[++tot]={v,head[u]},head[u]=tot;}

int rt,nxt[N],st[N],top,num;
bool vis[N];
bool ring(int u,int fa)
{
    if(vis[u])
    {
        rt=u;
        int now=u;
        while(st[top]!=u) nxt[st[top]]=now,now=st[top],top--,num++;
        nxt[u]=now;
        num++;
        top--;
        return true;
    }
    st[++top]=u;
    vis[u]=true;
    for(int i=head[u];i;i=e[i].nxt)
    {
        int v=e[i].to;
        if(v==fa) continue;
        if(ring(v,u)) return true;
    }
    vis[u]=false;
    top--;
    return false;
}
ull rep[N];
int siz[N];
ull hash_tree(int u,int fa)
{
    ull h=1;
    siz[u]=1;
    for(int i=head[u];i;i=e[i].nxt)
    {
        int v=e[i].to;
        if(v==fa||nxt[v]) continue;
        h+=hash_tree(v,u)*rep[siz[v]];
        siz[u]+=siz[v];
    }
    return h;
}
bool check()
{
    ull h[2]={hash_tree(rt,0),hash_tree(nxt[rt],0)};
    if((num&1)&&h[0]!=h[1]) return false;
    for(int f=0,now=nxt[nxt[rt]];now!=rt;now=nxt[now],f=!f)
        if(hash_tree(now,0)!=h[f]) return false;
    return true;
}

template<typename T>
inline void read(T &x)
{
    T k=1;char ch=getchar();x=0;
    while(ch<'0'||ch>'9'){if(ch=='-') k=-1;ch=getchar();}
    while(ch>='0'&&ch<='9')x=(x<<1)+(x<<3)+(ch^48),ch=getchar();
    x*=k;
}

signed main()
{
    srand(time(NULL));
    read(T);
    for(int i=1;i<=1e5;i++) rep[i]=((ull)rand()<<30)+((ull)rand<<15)+rand();
    while(T--)
    {
        read(n),read(m);
        memset(head+1,0,n<<2);
        memset(nxt+1,0,n<<2);
        memset(vis+1,0,n);
        tot=rt=top=num=0;
        for(int i=1,u,v;i<=m;i++)
            read(u),read(v),add(u,v),add(v,u);
        if(m>n)
        {
            puts("NO");
            continue;
        }
        if(m==n-1)
        {
            puts("YES");
            continue;
        }
        ring(1,0);
        if(check()) puts("YES");
        else puts("NO");
    }
    return 0;
}
Source code, Language: C++14

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 3ms
memory: 2248kb

input:

4
7 6
1 2
2 3
3 4
4 5
5 6
3 7
3 3
1 2
2 3
3 1
5 5
1 2
2 3
3 4
4 1
1 5
1 0

output:

YES
YES
NO
YES

result:

ok 4 token(s): yes count is 3, no count is 1

Test #2:

score: 0
Accepted
time: 13ms
memory: 2332kb

input:

33192
2 1
1 2
3 2
1 3
2 3
3 3
1 2
1 3
2 3
4 3
1 4
2 4
3 4
4 3
1 3
1 4
2 4
4 4
1 3
1 4
2 4
3 4
4 4
1 3
1 4
2 3
2 4
4 5
1 3
1 4
2 3
2 4
3 4
4 6
1 2
1 3
1 4
2 3
2 4
3 4
5 4
1 5
2 5
3 5
4 5
5 4
1 4
1 5
2 5
3 5
5 5
1 4
1 5
2 5
3 5
4 5
5 5
1 4
1 5
2 4
3 5
4 5
5 5
1 4
1 5
2 4
2 5
3 5
5 6
1 4
1 5
2 4
2 5
3 ...

output:

YES
YES
YES
YES
YES
NO
YES
NO
NO
YES
YES
NO
NO
NO
NO
NO
NO
YES
NO
NO
NO
NO
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
NO
YES
YES
NO
NO
NO
YES
NO
NO
NO
NO
NO
YES
NO
NO
NO
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
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
NO
NO
NO
NO
NO...

result:

ok 33192 token(s): yes count is 58, no count is 33134

Test #3:

score: 0
Accepted
time: 14ms
memory: 2320kb

input:

40000
9 24
1 4
1 6
1 7
1 9
2 5
2 7
2 8
2 9
3 5
3 7
3 8
3 9
4 6
4 8
4 9
5 6
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9
9 21
1 4
1 6
1 7
1 8
2 5
2 7
2 8
2 9
3 5
3 7
3 9
4 6
4 8
4 9
5 6
5 9
6 7
6 8
6 9
7 8
8 9
9 21
1 4
1 6
1 7
1 8
2 5
2 7
2 8
2 9
3 5
3 7
3 9
4 6
4 8
4 9
5 6
5 9
6 7
6 8
6 9
7 8
7 9
9 22
1 4
1 6
1 ...

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 40000 token(s): yes count is 0, no count is 40000

Test #4:

score: 0
Accepted
time: 10ms
memory: 2320kb

input:

40000
9 16
1 4
1 6
1 8
1 9
2 5
2 7
2 8
2 9
3 6
3 7
4 7
5 8
6 9
7 8
7 9
8 9
9 16
1 4
1 6
1 8
1 9
2 5
2 7
2 8
2 9
3 6
3 7
4 7
5 8
5 9
7 8
7 9
8 9
9 16
1 4
1 6
1 8
1 9
2 5
2 7
2 8
2 9
3 6
3 7
4 7
5 8
5 9
6 9
7 8
8 9
9 16
1 4
1 6
1 8
1 9
2 5
2 7
2 8
2 9
3 6
3 7
4 7
5 8
5 9
6 9
7 8
7 9
9 17
1 4
1 6
1 8
1...

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 40000 token(s): yes count is 0, no count is 40000

Test #5:

score: 0
Accepted
time: 16ms
memory: 2224kb

input:

40000
9 17
1 5
1 6
1 7
1 8
2 5
2 7
2 9
3 6
3 8
3 9
4 7
4 8
4 9
5 7
5 8
5 9
6 9
9 18
1 5
1 6
1 7
1 8
2 5
2 7
2 9
3 6
3 8
3 9
4 7
4 8
4 9
5 7
5 8
5 9
6 9
8 9
9 18
1 5
1 6
1 7
1 8
2 5
2 7
2 9
3 6
3 8
3 9
4 7
4 8
4 9
5 7
5 8
5 9
6 9
7 9
9 19
1 5
1 6
1 7
1 8
2 5
2 7
2 9
3 6
3 8
3 9
4 7
4 8
4 9
5 7
5 8
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 40000 token(s): yes count is 0, no count is 40000

Test #6:

score: 0
Accepted
time: 25ms
memory: 2244kb

input:

40000
9 17
1 5
1 6
1 7
1 8
2 6
2 7
2 8
2 9
3 7
3 9
4 9
5 8
6 7
6 8
6 9
7 9
8 9
9 16
1 5
1 6
1 7
1 8
2 6
2 7
2 8
2 9
3 7
3 9
4 9
5 8
5 9
6 7
6 8
8 9
9 16
1 5
1 6
1 7
1 8
2 6
2 7
2 8
2 9
3 7
3 9
4 9
5 8
5 9
6 7
6 8
7 9
9 17
1 5
1 6
1 7
1 8
2 6
2 7
2 8
2 9
3 7
3 9
4 9
5 8
5 9
6 7
6 8
7 9
8 9
9 17
1 5
1...

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 40000 token(s): yes count is 0, no count is 40000

Test #7:

score: 0
Accepted
time: 9ms
memory: 2212kb

input:

40000
9 15
1 5
1 8
1 9
2 6
2 7
2 9
3 6
3 7
4 7
4 8
4 9
5 8
6 9
7 9
8 9
9 13
1 5
1 8
1 9
2 6
2 7
2 9
3 6
3 7
4 7
4 8
4 9
5 8
5 9
9 14
1 5
1 8
1 9
2 6
2 7
2 9
3 6
3 7
4 7
4 8
4 9
5 8
5 9
8 9
9 14
1 5
1 8
1 9
2 6
2 7
2 9
3 6
3 7
4 7
4 8
4 9
5 8
5 9
7 9
9 15
1 5
1 8
1 9
2 6
2 7
2 9
3 6
3 7
4 7
4 8
4 9
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 40000 token(s): yes count is 1, no count is 39999

Test #8:

score: 0
Accepted
time: 9ms
memory: 2180kb

input:

40000
9 8
1 9
2 9
3 9
4 9
5 9
6 9
7 9
8 9
9 8
1 8
1 9
2 9
3 9
4 9
5 9
6 9
7 9
9 9
1 8
1 9
2 9
3 9
4 9
5 9
6 9
7 9
8 9
9 8
1 8
2 8
3 9
4 9
5 9
6 9
7 9
8 9
9 8
1 8
1 9
2 8
3 9
4 9
5 9
6 9
7 9
9 9
1 8
1 9
2 8
3 9
4 9
5 9
6 9
7 9
8 9
9 9
1 8
1 9
2 8
2 9
3 9
4 9
5 9
6 9
7 9
9 10
1 8
1 9
2 8
2 9
3 9
4 9
5...

output:

YES
YES
NO
YES
YES
NO
NO
NO
YES
YES
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
YES
NO
NO
YES
NO
YES
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
NO
YES
NO
YES
NO
NO
NO
N...

result:

ok 40000 token(s): yes count is 50, no count is 39950

Test #9:

score: 0
Accepted
time: 12ms
memory: 2228kb

input:

1393
25 100
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 10
2 11
2 12
2 13
3 4
3 5
3 14
3 17
3 18
3 19
4 5
4 15
4 20
4 22
4 23
5 16
5 21
5 24
5 25
6 7
6 8
6 9
6 10
6 14
6 15
6 16
7 8
7 9
7 11
7 17
7 20
7 21
8 9
8 12
8 18
8 22
8 24
9 13
9 19
9 23
9 25
10 11
10 12
10 13
10 14
10 15
10 16
11 12
11 13
...

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 1393 token(s): yes count is 0, no count is 1393

Test #10:

score: 0
Accepted
time: 22ms
memory: 2224kb

input:

3000
35 280
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
2 3
2 4
2 5
2 6
2 7
2 8
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
3 11
3 12
3 13
3 16
3 17
3 18
3 21
3 24
3 25
3 26
3 27
3 32
3 34
3 35
4 10
4 14
4 15
4 16
4 17
4 19
4 20
4 24
4 25
4 26
4 28
4 31
4 33
4 35
5 9
5 1...

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 3000 token(s): yes count is 0, no count is 3000

Test #11:

score: 0
Accepted
time: 70ms
memory: 5060kb

input:

30
28171 28170
2482 5158
15414 17513
7825 17196
10171 8545
8850 13596
3314 9296
5490 15625
18905 9569
24135 6453
360 718
65 27875
13734 20008
20072 4447
23395 24852
11440 1818
20672 13049
13770 6079
19115 24044
22134 24300
15787 3053
6462 6652
3200 14184
20621 629
1328 5200
7181 17707
4515 18911
249...

output:

YES
NO
NO
NO
YES
YES
NO
NO
NO
NO
YES
NO
NO
NO
YES
YES
YES
NO
YES
NO
NO
NO
NO
NO
YES
YES
NO
NO
YES
YES

result:

ok 30 token(s): yes count is 12, no count is 18

Test #12:

score: 0
Accepted
time: 60ms
memory: 5088kb

input:

30
3658 3658
1673 1805
115 1360
145 1722
3398 2869
700 3578
2145 60
3563 2682
2957 307
2443 1048
3581 2555
2368 2336
1023 3041
664 412
1950 552
3425 1162
3159 3296
1373 1763
1336 3591
1119 1992
1912 354
3573 3124
1351 1022
3047 2879
2521 1939
1683 1679
1070 1259
1342 1637
732 2576
2167 3067
2742 514...

output:

NO
NO
YES
YES
NO
YES
YES
NO
NO
NO
YES
NO
NO
NO
YES
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
NO
NO

result:

ok 30 token(s): yes count is 13, no count is 17

Test #13:

score: 0
Accepted
time: 59ms
memory: 5096kb

input:

30
6200 6199
2543 3295
1003 4780
4627 4563
5620 660
1731 3047
1198 3343
3419 4710
2488 3843
3722 4576
752 3212
5313 4025
4612 286
1967 1397
36 2212
1206 928
4689 1268
2831 4376
4334 3028
1040 1514
5636 5331
4257 571
5182 5007
1629 208
2345 3406
5280 4999
2607 2254
6192 1403
5075 3889
3389 5294
3682 ...

output:

YES
NO
YES
YES
YES
NO
YES
NO
NO
NO
YES
NO
NO
YES
NO
YES
NO
NO
YES
YES
YES
NO
NO
YES
YES
YES
NO
YES
NO
YES

result:

ok 30 token(s): yes count is 16, no count is 14

Test #14:

score: 0
Accepted
time: 56ms
memory: 5152kb

input:

30
14491 14490
6052 10994
13301 461
1336 9631
10722 4121
9829 5812
11883 5039
4854 6739
4064 11033
466 6698
2959 4374
3041 3663
5616 3289
458 788
4018 8915
13689 2763
14153 14146
2336 9011
7827 11114
9235 13235
4091 5135
8099 10920
4359 13623
10194 870
3222 11124
13620 2624
4477 7638
12926 10795
506...

output:

YES
YES
NO
NO
YES
NO
NO
NO
YES
NO
YES
NO
YES
YES
YES
YES
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
NO

result:

ok 30 token(s): yes count is 18, no count is 12

Test #15:

score: 0
Accepted
time: 52ms
memory: 4996kb

input:

30
100000 99999
58634 53166
60069 39545
82578 88227
56874 85747
22905 28646
92672 64752
22373 59305
22541 59348
44095 65942
4988 67515
10343 77755
60473 69842
23600 65125
30620 9705
23682 88606
90443 30376
64660 28469
49987 74473
95538 6848
57849 92719
41776 11339
34932 41927
53269 36288
27451 77680...

output:

YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
NO
NO
YES
YES
NO
NO
NO
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES

result:

ok 30 token(s): yes count is 12, no count is 18

Test #16:

score: 0
Accepted
time: 65ms
memory: 5076kb

input:

30
28822 28821
18849 2213
3904 10406
22000 14733
3382 11686
18120 2209
16720 21313
27796 11273
2151 1627
14221 1730
28679 13010
13611 8540
8923 13036
14093 25113
28268 1341
22450 5687
24407 28379
28185 19130
9949 4590
19825 24477
24266 21368
15658 20039
19834 22900
10711 27768
21931 21505
701 5260
2...

output:

YES
NO
YES
YES
NO
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
NO
NO
YES
YES
YES
NO
NO
YES
NO
NO
YES
YES
NO
NO
YES

result:

ok 30 token(s): yes count is 14, no count is 16

Test #17:

score: 0
Accepted
time: 70ms
memory: 4948kb

input:

30
94155 94155
59782 9369
85417 55440
49151 38561
70569 2997
58372 92455
55440 13968
23987 25454
31693 59782
28401 47143
70435 87698
29557 80207
71824 24642
52316 53847
52316 49058
26005 29924
42139 19301
57171 76189
41506 59782
41871 88927
2997 10080
41910 83200
52724 3425
55302 18910
72572 45110
6...

output:

NO
YES
NO
YES
YES
NO
YES
NO
NO
YES
YES
NO
YES
NO
YES
NO
YES
YES
NO
YES
YES
YES
NO
NO
YES
NO
NO
NO
NO
NO

result:

ok 30 token(s): yes count is 14, no count is 16

Test #18:

score: 0
Accepted
time: 56ms
memory: 2316kb

input:

100000
8 8
7 6
2 8
4 2
7 1
4 3
7 2
6 3
5 6
19 18
7 19
17 10
16 2
1 17
9 2
13 18
8 13
1 6
2 5
5 3
14 5
15 7
2 13
13 7
2 4
2 12
11 7
13 6
36 35
32 14
3 19
9 27
31 20
3 13
3 20
7 8
20 6
28 33
24 5
17 20
12 20
11 24
18 16
25 20
10 30
36 16
15 3
2 16
21 28
21 24
24 12
34 25
17 1
11 2
6 27
29 7
26 20
5 23...

output:

NO
YES
YES
YES
YES
YES
NO
YES
YES
NO
NO
YES
YES
NO
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
NO
YES
YES
YES
NO
NO
YES
YES
YES
NO
YES
YES
YES
NO
NO
YES
YES
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
NO
YES
YES
YES
YES
YES
YES
...

result:

ok 100000 token(s): yes count is 62089, no count is 37911

Test #19:

score: 0
Accepted
time: 32ms
memory: 2172kb

input:

100000
4 4
4 2
1 4
2 3
3 1
5 4
4 1
1 5
2 3
2 5
8 7
8 3
3 7
6 4
1 5
4 8
5 2
1 6
5 5
3 1
2 4
3 5
5 4
4 3
2 1
2 1
2 1
1 2
21 20
1 21
13 18
17 13
19 4
19 1
16 5
17 20
2 9
14 9
8 12
6 2
9 15
7 11
13 19
11 18
6 10
4 16
3 9
5 12
15 11
2 1
2 1
16 16
6 9
9 1
11 2
1 3
13 6
7 12
12 3
4 16
11 7
10 15
11 16
5 16...

output:

YES
YES
YES
NO
YES
YES
YES
YES
NO
YES
NO
YES
YES
NO
NO
YES
YES
NO
YES
NO
YES
YES
NO
NO
NO
YES
YES
YES
YES
NO
YES
YES
YES
YES
NO
YES
NO
NO
YES
NO
YES
YES
YES
YES
NO
NO
NO
YES
NO
YES
NO
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
YES
YES
YES
NO
NO
YES
YES
YES
YES
YES
YES
NO
NO
YES
YES
NO
NO
YES
...

result:

ok 100000 token(s): yes count is 63111, no count is 36889

Test #20:

score: 0
Accepted
time: 40ms
memory: 2232kb

input:

100000
7 7
1 2
6 2
3 7
4 2
4 5
5 7
3 1
13 12
13 9
3 8
3 11
4 10
7 10
4 8
5 9
7 1
2 11
6 12
13 2
12 1
3 3
2 3
1 3
1 2
4 3
1 3
4 2
1 4
17 17
7 5
17 4
12 5
6 7
13 4
11 14
2 3
10 17
13 3
16 9
8 2
6 17
9 10
11 15
15 16
10 1
8 1
3 2
3 2
3 1
8 8
7 6
1 3
2 3
4 8
8 2
5 4
6 4
5 1
3 2
2 3
1 3
2 1
2 1
2 1
2 1
1...

output:

NO
YES
YES
YES
NO
YES
NO
YES
YES
YES
YES
YES
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
NO
NO
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
NO
YES
NO
NO
NO
NO
NO
YES
NO
YES
NO
YES
NO
NO
YES
YES
YES
YES
NO
NO
NO
YES
NO
YES
YES
YES
NO
NO
YES
YES
YES
NO
YES
YES
NO
YES
YES
YES...

result:

ok 100000 token(s): yes count is 63673, no count is 36327

Test #21:

score: 0
Accepted
time: 45ms
memory: 2252kb

input:

100000
2 1
2 1
26 25
18 23
26 5
16 8
23 5
12 13
15 24
17 24
6 12
2 9
4 13
9 17
14 11
14 20
20 4
8 3
1 10
21 19
3 1
25 10
22 7
7 15
11 22
6 21
16 26
18 2
2 1
2 1
18 17
11 13
17 8
7 1
11 12
13 16
6 4
1 3
17 14
6 16
9 15
7 2
10 5
3 4
15 8
18 14
9 12
5 2
37 36
31 36
29 28
25 5
22 29
22 35
7 23
33 5
25 2...

output:

YES
YES
YES
YES
YES
YES
NO
YES
YES
NO
NO
NO
NO
NO
NO
YES
NO
NO
YES
NO
NO
YES
YES
YES
YES
YES
YES
NO
YES
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
NO
NO
NO
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
NO
YES
YE...

result:

ok 100000 token(s): yes count is 63794, no count is 36206

Test #22:

score: 0
Accepted
time: 40ms
memory: 2184kb

input:

100000
5 4
1 5
2 1
3 1
4 1
33 32
33 16
16 21
28 29
16 1
16 23
14 16
13 16
16 19
2 16
32 16
16 22
28 16
9 23
2 5
16 24
3 17
16 25
3 26
16 3
20 23
16 12
8 28
16 31
23 10
6 3
11 23
30 28
3 4
16 7
18 23
27 16
3 15
2 1
1 2
3 2
1 3
3 2
5 5
3 1
1 4
5 3
5 1
1 2
5 4
5 2
5 4
5 3
1 5
25 25
17 24
16 10
24 16
24...

output:

YES
YES
YES
YES
NO
YES
NO
YES
NO
YES
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
NO
NO
NO
YES
YES
YES
YES
YES
NO
YES
NO
NO
NO
NO
YES
YES
NO
NO
NO
YES
NO
NO
NO
NO
NO
YES
NO
NO
NO
NO
YES
NO
YES
NO
YES
YES
YES
YES
YES
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
NO
YES
NO
NO
YES
YES
YES
YES
YES
YES
NO
NO
YES
YES
...

result:

ok 100000 token(s): yes count is 60664, no count is 39336

Test #23:

score: 0
Accepted
time: 30ms
memory: 2224kb

input:

100000
22 22
18 20
18 6
18 11
18 12
11 5
19 18
5 18
9 18
18 1
15 18
17 18
18 22
16 18
18 4
10 18
7 18
13 18
2 18
18 21
8 18
3 18
14 18
14 13
6 13
6 10
6 11
6 5
4 6
7 6
3 6
6 2
12 6
6 9
8 6
14 6
1 6
49 48
29 1
29 45
29 42
29 11
24 29
27 29
29 2
29 17
29 10
29 41
26 29
29 3
29 28
29 35
14 24
29 43
34 ...

output:

NO
YES
YES
YES
YES
NO
YES
YES
NO
YES
NO
NO
YES
YES
YES
YES
NO
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
YES
YES
NO
YES
NO
YES
NO
NO
NO
NO
YES
YES
NO
NO
NO
YES
YES
YES
YES
NO
YES
YES
NO
NO
YES
YES
YES
NO
YES
YES
NO
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
Y...

result:

ok 100000 token(s): yes count is 60375, no count is 39625

Test #24:

score: 0
Accepted
time: 33ms
memory: 2316kb

input:

100000
10 10
6 8
6 7
8 3
2 8
4 8
10 8
9 8
5 8
8 1
7 8
39 38
39 25
26 39
2 39
12 39
14 39
35 39
17 39
39 9
39 31
5 39
37 39
39 27
1 39
10 39
39 38
29 39
15 39
39 18
13 39
24 39
39 19
32 39
39 3
39 8
36 39
39 28
39 11
39 21
39 30
39 34
39 22
4 39
39 7
39 23
16 39
33 39
39 20
39 6
8 8
2 4
4 8
6 4
1 4
4...

output:

NO
YES
NO
NO
NO
YES
YES
NO
YES
NO
YES
NO
NO
YES
YES
NO
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
YES
NO
NO
YES
YES
NO
YES
NO
NO
YES
YES
YES
NO
YES
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
YES
NO
YES
YES
YES
YES
YES
NO
NO
NO
YES
NO
YES
YES
NO
YES
NO
NO
YES
NO
YES
NO
NO
YES
YES
NO
YES
YES
NO
YES
YES
N...

result:

ok 100000 token(s): yes count is 60402, no count is 39598

Test #25:

score: 0
Accepted
time: 53ms
memory: 2340kb

input:

1000
92 92
48 22
48 36
85 61
5 34
32 92
85 77
51 80
20 21
46 66
88 60
87 24
91 37
73 49
68 82
57 43
33 8
51 9
87 88
30 87
36 55
74 9
47 79
56 28
51 91
17 43
10 91
83 8
4 31
59 27
83 20
25 40
58 57
64 58
78 6
24 19
91 13
40 23
33 39
15 24
89 9
86 15
20 28
4 82
62 6
89 71
23 51
41 6
13 27
91 66
20 3
3...

output:

NO
NO
NO
YES
YES
YES
NO
NO
NO
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
YES
YES
YES
NO
YES
YES
YES
YES
NO
YES
YES
NO
YES
NO
NO
NO
YES
YES
YES
YES
NO
YES
YES
YES
NO
YES
NO
YES
NO
YES
NO
NO
NO
YES
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
NO
YE...

result:

ok 1000 token(s): yes count is 514, no count is 486

Test #26:

score: 0
Accepted
time: 45ms
memory: 2524kb

input:

1000
1395 1395
1105 938
78 70
1391 1308
575 1100
870 761
532 359
317 510
731 1286
225 1032
417 457
143 138
1183 590
1163 684
1330 486
85 496
164 1362
1384 536
1179 634
345 556
1050 1225
96 1344
936 4
1293 1364
680 1342
1011 456
1218 252
515 7
1327 885
147 674
117 1359
232 876
240 547
529 995
1369 66...

output:

NO
NO
YES
NO
YES
NO
NO
YES
YES
YES
YES
YES
NO
NO
NO
YES
NO
YES
YES
NO
NO
NO
YES
NO
YES
NO
NO
YES
YES
NO
YES
YES
YES
NO
NO
NO
YES
YES
YES
NO
NO
NO
NO
NO
YES
NO
NO
YES
NO
NO
NO
YES
NO
NO
NO
NO
NO
NO
YES
NO
NO
NO
NO
NO
YES
YES
YES
NO
NO
YES
YES
NO
YES
NO
NO
YES
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
NO
NO
YES...

result:

ok 1000 token(s): yes count is 472, no count is 528

Test #27:

score: 0
Accepted
time: 48ms
memory: 2356kb

input:

1000
4795 4795
1309 4214
4012 1850
4558 438
94 4634
4280 776
2602 2099
3333 2225
3255 563
4312 2297
3970 37
4226 1505
3154 2093
4346 2696
1150 3480
1177 3639
4505 3028
2158 975
1656 3875
440 3655
1582 623
1481 1065
671 3689
1779 3033
4280 1446
2065 4021
3786 2148
504 435
2942 1135
1679 1604
2577 129...

output:

NO
YES
YES
YES
YES
YES
NO
YES
NO
YES
NO
YES
YES
YES
YES
YES
NO
NO
YES
YES
NO
YES
NO
YES
NO
NO
NO
YES
YES
NO
YES
NO
NO
NO
NO
NO
YES
NO
NO
NO
NO
NO
YES
YES
NO
YES
NO
NO
NO
YES
YES
NO
YES
NO
YES
YES
NO
NO
NO
YES
NO
NO
YES
YES
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
NO
NO
YES
Y...

result:

ok 1000 token(s): yes count is 511, no count is 489

Test #28:

score: 0
Accepted
time: 50ms
memory: 2544kb

input:

1000
79 78
43 41
21 66
30 10
65 53
49 36
42 60
62 2
40 67
46 43
13 79
17 51
15 9
50 78
34 31
65 35
27 26
46 18
25 4
70 68
48 76
47 15
12 22
74 24
1 71
67 56
52 61
3 29
73 68
19 17
26 25
32 59
2 44
19 61
79 51
31 27
50 35
41 77
57 45
24 8
28 44
54 5
69 70
59 16
6 23
1 60
29 39
55 32
72 16
54 42
12 6
...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
NO
YES
NO
NO
YES
NO
NO
NO
NO
YES
YES
NO
NO
NO
YES
YES
NO
NO
YES
NO
NO
NO
NO
YES
NO
YES
YES
NO
YES
NO
NO
YES
NO
NO
YES
NO
YES
NO
YES
YES
YES
NO
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
NO
NO
YES
YES
NO
YES
YES
YES
NO
NO
YES
NO
YES
YES
NO
NO
YES...

result:

ok 1000 token(s): yes count is 506, no count is 494

Test #29:

score: 0
Accepted
time: 52ms
memory: 2432kb

input:

1000
564 563
286 186
170 93
368 101
6 1
131 96
209 195
87 541
243 455
536 294
107 1
33 102
405 518
274 152
52 541
133 476
304 169
476 22
282 486
541 96
77 476
105 286
386 541
48 4
1 331
157 519
274 288
169 534
149 113
562 116
21 394
558 21
541 141
264 165
220 209
167 535
324 116
228 196
264 314
62 4...

output:

YES
YES
NO
NO
NO
YES
YES
NO
YES
YES
YES
NO
YES
YES
YES
YES
NO
YES
YES
NO
YES
YES
NO
NO
YES
NO
NO
NO
NO
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
NO
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
YES
NO
YES
NO
YES
NO
YES
YES
YES
YES
NO
YES
NO
YES
NO
NO
YES
YES
NO
YES
YES
NO
NO
YES
NO
YES
YES
NO
YES
NO
...

result:

ok 1000 token(s): yes count is 501, no count is 499

Test #30:

score: 0
Accepted
time: 60ms
memory: 2424kb

input:

1000
121 120
31 17
60 31
31 58
31 57
54 31
31 118
26 31
31 39
31 80
50 121
31 99
87 51
105 51
116 31
31 32
51 103
31 18
45 31
31 94
31 100
5 31
10 31
31 64
84 31
20 102
70 31
31 19
101 31
31 36
73 31
95 51
31 75
31 53
31 82
31 47
31 74
15 31
42 31
27 31
4 31
30 31
31 55
31 35
31 89
71 31
24 31
31 7
...

output:

YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
NO
NO
NO
NO
YES
YES
YES
NO
NO
YES
YES
YES
NO
YES
YES
YES
NO
YES
YES
YES
YES
YES
NO
YES
NO
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
NO
NO
NO
NO
YES
NO
NO
YES
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
N...

result:

ok 1000 token(s): yes count is 520, no count is 480

Test #31:

score: 0
Accepted
time: 44ms
memory: 2432kb

input:

1000
1860 1860
1486 1549
1486 4
1486 1319
1486 876
1486 1346
1486 1079
1486 1448
658 1486
772 1486
1486 1569
1486 458
201 1486
845 1486
932 1511
1553 115
263 1486
306 310
115 1596
1486 1374
115 331
1486 1110
115 739
1486 77
1486 1849
1486 464
1486 139
1701 310
1804 1486
1486 1825
1629 1486
115 307
2...

output:

NO
NO
YES
NO
NO
YES
NO
NO
NO
YES
NO
NO
YES
YES
YES
YES
NO
YES
NO
NO
NO
YES
YES
YES
NO
NO
NO
YES
NO
NO
YES
YES
NO
NO
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
YES
NO
YES
YES
YES
NO
YES
YES
YES
YES
NO
YES
YES
YES
NO
NO
NO
YES
NO
YES
NO
NO
NO
NO
NO
NO
YES
NO
YES
NO
NO
YES
YES
NO
YES
YES
NO
YES
NO
YES
NO
NO
...

result:

ok 1000 token(s): yes count is 504, no count is 496

Test #32:

score: 0
Accepted
time: 102ms
memory: 5024kb

input:

10
99999 99999
55299 76206
53426 64385
86905 10791
98284 81890
12655 7511
46654 55754
61631 27386
70022 21981
87542 20275
66909 81933
71211 38008
84522 76391
62184 73876
84201 90037
34273 33546
40421 84499
82568 84837
65007 63760
3952 93765
6975 26057
37512 92996
18729 39781
34934 32453
50660 22877
...

output:

NO
NO
YES
NO
NO
YES
YES
NO
NO
YES

result:

ok 10 token(s): yes count is 4, no count is 6

Test #33:

score: 0
Accepted
time: 105ms
memory: 4972kb

input:

10
100000 100000
80453 9109
35432 82405
88992 78477
24413 20501
38584 96799
13443 57974
56636 68614
75936 69987
83195 46581
41678 17455
72227 87089
56924 26527
93681 7919
32011 91553
43058 64439
89121 26747
33767 84585
10449 37803
83365 92049
49177 83710
4596 12834
73214 40050
62496 43493
7089 51625...

output:

YES
NO
YES
NO
YES
YES
YES
NO
NO
YES

result:

ok 10 token(s): yes count is 6, no count is 4

Test #34:

score: 0
Accepted
time: 128ms
memory: 11712kb

input:

10
99999 99999
78883 36443
67800 23425
68922 45225
26045 28124
80375 70077
99532 98724
33964 78380
56589 93558
41279 38352
25208 95475
56889 23
77414 87088
48267 18326
98620 94432
18893 24052
87301 84789
5571 36537
84042 30379
44977 2725
80540 86514
83801 41222
44852 26591
44909 81229
50737 40038
30...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #35:

score: 0
Accepted
time: 117ms
memory: 11760kb

input:

10
100000 100000
65690 72848
7525 59163
22913 92659
637 42294
73052 80783
96435 28982
46576 22618
12929 71541
95452 27926
1882 4245
93116 42865
4421 91488
93174 57859
68478 3646
84489 12701
63850 86878
54711 79192
37083 78277
18996 9072
59873 14665
57763 79950
72288 6792
34056 72677
30679 11611
7507...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #36:

score: 0
Accepted
time: 108ms
memory: 8396kb

input:

10
99998 99998
56337 74968
78913 99296
9035 6309
4549 42626
23722 75464
78240 75974
57617 67863
64934 71737
84598 39558
26088 84811
5325 86486
59484 99961
71773 42079
96107 29038
75150 78836
10417 97471
89437 28006
71825 72730
71140 20789
23939 77963
57533 63523
99286 60991
54094 49702
49310 71543
1...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #37:

score: 0
Accepted
time: 110ms
memory: 8300kb

input:

10
100000 100000
63815 3625
32296 84580
23849 83409
33690 1811
37600 26074
71282 40355
70944 43351
19901 65705
11560 85569
64766 48662
56590 77874
41633 82398
31554 91918
13789 27130
94480 36938
68133 84329
18917 38457
78815 28741
6524 79909
67071 82047
28454 37020
89037 24255
56690 4898
11550 281
4...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #38:

score: 0
Accepted
time: 88ms
memory: 7332kb

input:

10
99999 99999
46900 92839
84072 29148
61872 29154
26803 41345
41562 66603
11107 74900
72200 34439
43653 7157
49018 18421
34089 90339
43947 14562
73697 37251
45703 67847
59041 60833
25822 96546
94798 50315
6083 54256
21351 18718
86085 55498
12307 88645
61492 24878
14191 67063
80198 52680
97421 27928...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #39:

score: 0
Accepted
time: 106ms
memory: 7348kb

input:

10
99996 99996
34862 34903
19813 73904
19904 99608
90308 37873
49635 83926
53061 80551
3889 79750
10014 913
18333 69371
16783 56986
97281 92385
20576 55967
6657 29114
82832 96966
70587 88808
22952 72638
6291 26616
6147 21341
44813 44847
88283 85414
13208 59333
67762 28952
90927 24457
79999 56387
527...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #40:

score: 0
Accepted
time: 105ms
memory: 5140kb

input:

10
100000 100000
20400 27643
36724 75417
78289 24073
96193 27717
24574 88752
96121 59895
62 21530
30007 4930
22338 16422
11909 86674
86206 57694
23448 87078
46079 92151
64590 49977
10565 40701
69152 68688
48291 49944
47137 8030
80216 18260
21613 18309
54272 14802
31642 89726
83026 2800
62533 62432
5...

output:

YES
NO
YES
NO
NO
NO
YES
YES
NO
NO

result:

ok 10 token(s): yes count is 4, no count is 6

Test #41:

score: -100
Wrong Answer
time: 111ms
memory: 5212kb

input:

10
99999 99999
11602 38387
41801 54147
39814 47797
64769 86906
22479 19371
52904 90928
82168 70773
97018 47335
52324 82889
59489 60786
94312 85192
22569 14627
76269 42584
15690 97633
12119 90694
75900 78722
12523 2377
36810 13575
64644 60853
36850 71268
80042 46108
90402 98175
14489 91593
35596 8910...

output:

NO
YES
YES
NO
YES
YES
YES
YES
NO
NO

result:

wrong answer expected NO, found YES [7th token]
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