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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#756659#9556. The Hanged Manucup-team3734#AC ✓106ms52932kbC++232.4kb2024-11-16 21:27:442024-11-16 21:27:51

Judging History

你现在查看的是最新测评结果

  • [2024-11-16 21:27:51]
  • 评测
  • 测评结果:AC
  • 用时:106ms
  • 内存:52932kb
  • [2024-11-16 21:27:44]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

typedef long long i64;
typedef unsigned long long u64;
typedef double lf;

vector< vector<int> > tree;
vector< pair<int, int> > edges;

pair<int, int> dfs(int v, int p) {
    vector< pair<int, int> > children;
    for (int u : tree[v]) {
        if (u == p) continue;
        children.push_back(dfs(u, v));
        // cerr << "ret from " << u + 1 << " " << children.back().first << ' ' << children.back().second + 1 << endl;
    }
    sort(children.begin(), children.end());
    if (children.size() % 2 == 0) {
        if (!children.empty() && children.back().first > 1 && p != -1) {
            for (int i = 0; i + 2 < (int) children.size(); i += 2) {
               edges.push_back({children[i].second, children[i + 1].second});
            }
            edges.push_back({children.back().second, v});
            int idx = (int) children.size() - 2;
            return {children[idx].first + 1, children[idx].second};
        } else {
            for (int i = 0; i + 1 < (int) children.size(); i += 2) {
               edges.push_back({children[i].second, children[i + 1].second});
            }
            return {1, v};
        }
    }

    for (int i = 0; i + 1 < (int) children.size(); i += 2) {
        edges.push_back({children[i].second, children[i + 1].second});
    }
    
    if (p == -1) {
        if (children.back().first == 1) {
            return {-1, -1};
        }
        else {
            edges.emplace_back(children.back().second, v);
        }
    } 
    return {children.back().first + 1, children.back().second};
}

const auto ROOT = 1488300228;

void solve() {
    int n;
    cin >> n;
    tree.assign(n, vector<int>());
    for (int i = 1; i < n; i++) {
        int a, b;
        cin >> a >> b;
        --a, --b;
        tree[a].push_back(b);
        tree[b].push_back(a);
    }
    edges.clear();

    // cerr << "ROOT = " << ROOT % n + 1 << endl;
    if (dfs(ROOT % n, -1).first == -1) {
        cout << "-1\n";
    } else {
        cout << edges.size() << '\n';
        for (auto [a, b] : edges) {
            cout << a + 1 << ' ' << b + 1 << '\n';
        }
    }
}

signed main() {
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
#endif
    ios_base::sync_with_stdio(false);
    int t = 1;
    cin >> t;
    for (int i = 0; i < t; i++) {
        solve();
    }
}

这程序好像有点Bug,我给组数据试试?

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3556kb

input:

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

output:

-1
3
5 6
7 1
2 3
2
3 4
2 6

result:

ok Good Job! (3 test cases)

Test #2:

score: 0
Accepted
time: 0ms
memory: 3492kb

input:

3
6
1 2
1 3
1 4
4 5
4 6
2
1 2
2
2 1

output:

-1
-1
-1

result:

ok Good Job! (3 test cases)

Test #3:

score: 0
Accepted
time: 63ms
memory: 3548kb

input:

100000
3
1 3
2 1
3
2 3
1 2
3
2 3
1 3
3
2 1
1 3
3
1 2
2 3
3
1 3
2 3
3
2 1
1 3
3
2 3
1 2
3
2 3
1 3
3
2 1
1 3
3
2 3
1 2
3
1 3
2 3
3
1 3
2 1
3
2 3
1 2
3
2 3
1 3
3
1 3
2 1
3
1 2
2 3
3
1 3
2 3
3
2 1
1 3
3
1 2
2 3
3
1 3
2 3
3
1 3
2 1
3
2 3
1 2
3
1 3
2 3
3
1 3
2 1
3
2 3
1 2
3
1 3
2 3
3
2 1
1 3
3
2 3
1 2
3
2...

output:

1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
1
2 1
1
2 3
1
3 1
...

result:

ok Good Job! (100000 test cases)

Test #4:

score: 0
Accepted
time: 70ms
memory: 3608kb

input:

75000
4
3 1
2 1
1 4
4
3 1
2 4
1 2
4
2 1
1 3
3 4
4
1 4
2 1
3 4
4
2 1
3 2
1 4
4
3 2
2 4
1 2
4
2 3
3 4
1 2
4
3 4
2 4
1 2
4
3 1
1 4
2 3
4
3 2
1 3
2 4
4
2 3
1 3
3 4
4
1 3
3 4
2 4
4
3 1
1 4
2 4
4
3 2
2 4
1 4
4
2 3
3 4
1 4
4
3 4
2 4
1 4
4
1 4
2 1
3 1
4
2 4
3 1
1 2
4
2 1
3 4
1 3
4
2 1
1 4
3 4
4
1 4
2 1
3 2
...

output:

-1
1
3 4
1
2 4
1
2 3
1
4 3
-1
1
4 1
1
3 1
1
4 2
1
4 1
-1
1
2 1
1
3 2
1
3 1
1
2 1
-1
-1
1
3 4
1
2 4
1
2 3
1
4 3
-1
1
4 1
1
3 1
1
4 2
1
4 1
-1
1
2 1
1
3 2
1
3 1
1
2 1
-1
-1
1
3 4
1
2 4
1
2 3
1
4 3
-1
1
4 1
1
3 1
1
4 2
1
4 1
-1
1
2 1
1
3 2
1
3 1
1
2 1
-1
-1
1
3 4
1
2 4
1
2 3
1
4 3
-1
1
4 1
1
3 1
1
4 2
...

result:

ok Good Job! (75000 test cases)

Test #5:

score: 0
Accepted
time: 43ms
memory: 3624kb

input:

60000
5
2 1
3 1
4 1
1 5
5
1 2
4 1
2 5
3 1
5
1 3
3 5
4 1
2 1
5
2 1
4 5
1 4
3 1
5
3 1
1 5
2 1
4 5
5
3 1
4 2
1 5
2 1
5
1 2
3 1
2 5
4 2
5
4 1
1 2
3 5
2 3
5
3 1
2 4
4 5
1 2
5
4 5
3 1
2 5
1 2
5
1 5
2 1
3 1
4 3
5
1 3
4 1
2 5
3 2
5
4 3
2 1
1 3
3 5
5
3 4
1 3
4 5
2 1
5
2 1
1 3
4 5
3 5
5
3 4
4 1
1 5
2 1
5
3 1
...

output:

2
2 3
5 4
2
5 1
3 4
2
5 1
2 4
2
2 3
1 5
2
2 3
1 4
2
3 5
1 4
2
3 2
5 4
1
5 4
1
5 3
1
3 4
2
2 5
1 4
1
5 4
2
2 3
5 4
1
5 2
1
2 4
2
2 5
1 3
1
3 5
1
2 5
2
3 5
2 4
1
2 3
2
3 1
2 4
1
3 4
1
2 4
1
3 2
2
2 5
3 4
2
3 1
5 4
2
3 5
2 4
1
5 4
1
5 3
1
3 4
2
5 2
3 4
2
1 3
5 4
2
5 2
1 4
2
1 3
2 5
2
1 3
2 4
1
5 4
2
1 ...

result:

ok Good Job! (60000 test cases)

Test #6:

score: 0
Accepted
time: 32ms
memory: 3824kb

input:

50000
6
1 6
5 1
4 1
2 1
3 1
6
5 1
3 1
1 2
2 6
4 1
6
4 1
5 1
1 3
2 1
3 6
6
4 6
2 1
5 1
3 1
1 4
6
5 6
1 5
4 1
3 1
2 1
6
4 1
5 6
2 1
1 6
3 1
6
1 6
3 1
2 1
5 2
4 1
6
3 1
5 2
1 2
2 6
4 1
6
4 1
2 3
5 1
1 2
3 6
6
4 6
1 2
3 1
2 4
5 1
6
1 2
5 6
2 5
3 1
4 1
6
1 2
2 6
4 1
3 1
5 6
6
5 3
3 1
1 6
2 1
4 1
6
5 1
3 ...

output:

-1
2
3 4
5 6
2
2 4
5 6
2
2 3
5 6
2
2 3
4 6
2
2 3
4 5
2
3 4
6 5
-1
2
4 5
6 1
2
3 5
6 1
2
3 4
6 1
2
3 4
5 1
2
2 4
6 5
2
4 5
6 1
-1
2
2 5
6 1
2
2 4
6 1
2
2 4
5 1
2
2 3
6 5
2
3 5
6 1
2
2 5
6 1
-1
2
2 3
6 1
2
2 3
5 1
2
2 3
6 4
2
3 4
6 1
2
2 4
6 1
2
2 3
6 1
-1
2
2 3
4 1
2
2 3
5 4
2
3 4
5 1
2
2 4
5 1
2
2 3...

result:

ok Good Job! (50000 test cases)

Test #7:

score: 0
Accepted
time: 43ms
memory: 3764kb

input:

42857
7
3 1
2 1
5 1
6 1
4 1
1 7
7
4 1
1 2
6 1
3 1
2 7
5 1
7
3 7
2 1
1 3
4 1
6 1
5 1
7
4 7
1 4
6 1
5 1
2 1
3 1
7
4 1
1 5
6 1
3 1
5 7
2 1
7
6 7
5 1
2 1
4 1
1 6
3 1
7
6 7
2 1
1 7
3 1
5 1
4 1
7
4 1
5 1
6 2
3 1
2 1
1 7
7
1 2
4 1
6 2
3 1
2 7
5 1
7
6 1
2 3
4 1
5 1
1 2
3 7
7
6 1
4 7
3 1
1 2
5 1
2 4
7
1 2
3 ...

output:

3
2 4
5 6
7 3
3
4 5
7 1
6 3
3
2 4
5 6
1 7
3
2 5
7 1
6 3
3
2 4
7 1
6 3
3
2 4
7 1
5 3
3
2 4
6 1
5 3
3
4 5
6 1
7 3
3
6 7
2 4
5 3
2
4 5
7 6
2
5 6
7 3
2
4 6
7 3
2
4 5
7 3
2
4 5
6 3
3
2 4
5 7
1 6
2
4 5
6 7
3
2 4
6 7
5 3
2
2 5
6 7
2
2 4
6 7
2
2 4
5 7
2
2 4
5 6
3
2 5
6 1
7 3
2
5 6
7 3
2
2 5
7 6
3
6 7
2 4
5 ...

result:

ok Good Job! (42857 test cases)

Test #8:

score: 0
Accepted
time: 44ms
memory: 3604kb

input:

37500
8
5 1
1 8
7 1
4 1
6 1
2 1
3 1
8
3 1
2 8
4 1
6 1
1 2
7 1
5 1
8
3 8
4 1
2 1
1 3
6 1
5 1
7 1
8
1 4
5 1
7 1
6 1
4 8
2 1
3 1
8
1 5
5 8
4 1
2 1
3 1
7 1
6 1
8
1 6
3 1
4 1
2 1
5 1
6 8
7 1
8
1 7
6 1
4 1
3 1
5 1
7 8
2 1
8
5 1
4 1
2 1
1 8
6 1
7 8
3 1
8
1 8
4 1
2 1
5 1
7 2
3 1
6 1
8
6 1
5 1
7 2
4 1
2 8
3 ...

output:

-1
3
3 4
6 7
8 5
3
2 4
6 7
8 5
3
2 3
6 7
8 5
3
2 3
4 6
8 7
3
2 3
4 7
8 5
3
2 3
4 6
8 5
3
2 3
4 6
7 5
3
3 4
6 8
7 5
-1
3
4 6
8 1
7 5
3
3 6
8 1
7 5
3
3 4
6 7
8 1
3
3 4
8 1
7 5
3
3 4
8 1
6 5
3
3 4
7 1
6 5
3
2 4
6 8
7 5
3
4 6
8 1
7 5
-1
3
2 6
8 1
7 5
3
2 4
6 7
8 1
3
2 4
8 1
7 5
3
2 4
8 1
6 5
3
2 4
7 1
6...

result:

ok Good Job! (37500 test cases)

Test #9:

score: 0
Accepted
time: 38ms
memory: 3756kb

input:

300
1000
815 567
883 63
783 506
485 779
142 248
218 214
617 238
481 567
20 203
119 212
953 179
44 830
427 156
97 916
763 172
484 512
916 21
417 958
408 257
238 634
891 213
90 208
394 56
758 819
435 26
636 718
880 212
458 662
123 212
239 156
548 314
852 436
722 828
271 429
493 27
910 421
354 143
956 ...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok Good Job! (300 test cases)

Test #10:

score: 0
Accepted
time: 69ms
memory: 10304kb

input:

3
100000
21854 12448
41900 78683
26279 40303
96957 78925
50096 72644
14704 14585
44195 23551
3290 42026
25017 64658
4593 10713
29129 13530
62892 43675
23793 13329
97502 10091
78766 44620
59301 95815
25781 93162
12231 24059
77637 66545
53889 84545
65596 58277
31337 87701
29049 43837
99301 2408
41562 ...

output:

-1
-1
-1

result:

ok Good Job! (3 test cases)

Test #11:

score: 0
Accepted
time: 84ms
memory: 22416kb

input:

1
300000
264872 86229
63995 164384
180167 260692
169708 168083
149321 50390
177160 60629
178607 170744
176734 60911
231963 17936
49668 90468
205798 261858
7645 12727
240590 1798
8446 139678
32309 208096
226620 119112
204528 63548
110330 250899
219366 144880
258130 23221
203423 40874
45194 78650
1571...

output:

-1

result:

ok Good Job! (1 test case)

Test #12:

score: 0
Accepted
time: 61ms
memory: 3632kb

input:

30000
10
1 6
4 8
7 5
6 10
3 1
8 2
2 9
9 10
5 9
10
3 7
2 6
6 9
1 6
4 10
9 10
5 6
7 2
8 3
10
8 10
6 3
2 1
3 2
1 10
7 4
5 2
9 8
4 9
10
4 1
6 8
2 10
9 10
7 2
5 2
8 7
1 6
3 1
10
6 2
3 6
9 6
7 10
8 2
2 1
5 3
1 4
4 10
10
2 8
3 6
5 7
7 8
1 6
8 10
9 2
4 6
6 10
10
1 5
4 3
6 4
7 1
2 3
5 9
8 2
3 10
9 6
10
2 7
5...

output:

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

result:

ok Good Job! (30000 test cases)

Test #13:

score: 0
Accepted
time: 38ms
memory: 3608kb

input:

3000
99
79 72
72 6
1 90
94 89
31 28
59 89
78 85
73 35
57 45
45 99
38 57
11 70
26 14
92 13
35 52
30 18
61 15
29 86
60 22
5 57
17 84
36 84
70 37
10 86
80 91
34 87
65 8
42 88
87 25
88 43
8 47
33 78
62 47
15 73
83 77
24 33
97 38
23 77
20 34
85 32
55 22
63 10
66 30
39 5
28 62
89 15
37 49
16 75
74 66
47 4...

output:

29
3 93
19 80
79 8
55 60
16 27
22 14
26 58
76 57
97 45
1 88
95 43
53 44
67 4
59 94
61 89
17 36
74 84
40 30
81 52
9 50
7 63
65 48
51 47
23 83
56 85
69 82
11 78
77 33
41 24
30
93 92
4 50
63 43
68 16
34 71
1 26
25 59
13 29
88 11
47 98
51 60
95 15
81 56
80 41
10 61
30 77
9 38
14 74
27 96
91 6
42 87
22 6...

result:

ok Good Job! (3000 test cases)

Test #14:

score: 0
Accepted
time: 74ms
memory: 9196kb

input:

3
100000
83890 7467
75295 89651
4062 83955
60269 26734
58357 54437
22200 48174
87338 74094
86583 7977
1136 84701
34461 47665
82355 28324
32412 16170
5270 73823
37181 86410
22445 59139
27816 47294
540 79932
73768 41579
14577 92388
31765 75494
49018 24756
57215 90140
86438 22430
3974 15829
59053 22856...

output:

28400
29667 37228
63898 43623
46592 68304
9761 18236
50766 69500
14134 67705
22440 80350
41163 57341
39924 63279
53257 84837
13256 41780
34971 14889
69965 70868
24330 92733
20499 99719
55800 10947
98908 93824
32193 6702
45416 21684
12629 91986
39283 7005
48543 66755
52659 80237
3538 43632
5788 21099...

result:

ok Good Job! (3 test cases)

Test #15:

score: 0
Accepted
time: 97ms
memory: 20856kb

input:

1
300000
30683 45175
202516 82288
209967 151196
160370 148366
36159 83057
277846 18399
58641 259342
220025 290125
299864 69137
276256 59853
163412 98854
211643 219357
45085 203080
17046 259484
175009 201826
220413 253746
280406 235850
107084 114346
6196 164024
149354 242637
8884 201047
102007 121900...

output:

85153
181078 235887
198351 122784
235237 258778
38444 246148
248888 186883
62602 95289
111720 232862
203360 5775
188844 139048
192924 57702
142 49184
173836 213408
170082 172118
64319 228134
251481 173276
155427 159110
178142 29169
164823 199767
299327 161538
98078 133950
51486 214750
88858 173666
1...

result:

ok Good Job! (1 test case)

Test #16:

score: 0
Accepted
time: 98ms
memory: 52932kb

input:

1
300000
98923 244101
265083 199522
178854 130825
233559 275176
51110 162632
100454 144508
203138 94733
112144 116959
221684 184011
122356 174675
240265 56410
83529 213874
174757 59833
87918 98194
231431 71105
145121 105056
205429 60598
114418 168280
249115 124674
160102 183789
27460 854
72909 12628...

output:

1
250509 253307

result:

ok Good Job! (1 test case)

Test #17:

score: 0
Accepted
time: 93ms
memory: 21028kb

input:

1
300000
51552 258960
174014 1763
298103 122466
80039 102474
90881 123355
37816 182571
209856 199049
68745 246931
231305 147333
256217 77569
277988 49579
174054 154053
74959 60605
281490 278569
131850 7894
138112 208044
207380 67110
1334 204240
117581 152706
90835 142455
54402 68306
264004 244539
99...

output:

85191
67143 51659
119771 112957
291299 191892
162762 209399
262429 248540
162974 298016
87742 82687
283789 294771
93760 256071
283181 30994
135844 109409
145630 105108
135222 159132
209217 59157
280449 140064
149236 51869
79071 247313
270760 298666
141303 25228
34178 219222
146811 182773
144299 1338...

result:

ok Good Job! (1 test case)

Test #18:

score: 0
Accepted
time: 79ms
memory: 9116kb

input:

3
100000
43104 39350
58310 72159
1910 78304
366 33335
3494 5822
948 92660
11882 15212
69203 4346
45739 21275
65867 55409
61694 88089
71479 40349
35887 88786
52148 61962
82180 65178
93823 47701
43116 75915
86963 34539
50583 74229
40562 91601
12139 88394
52559 57679
25481 60170
31207 85832
4201 92027
...

output:

28431
38668 44446
32477 50107
17400 44318
84482 38800
27995 45104
38457 95821
57611 23037
89671 78209
77748 70720
69932 53953
57092 53995
55700 45999
71403 72213
18162 74766
49058 7491
51704 54563
27549 75821
76204 70987
36013 84362
14849 48891
83178 85728
28340 86753
21602 77877
9453 52883
79297 59...

result:

ok Good Job! (3 test cases)

Test #19:

score: 0
Accepted
time: 106ms
memory: 47984kb

input:

1
299999
153306 123584
100430 137396
151712 125355
180598 178628
178522 156317
6811 124889
41530 107031
35237 104587
235884 157908
130785 274651
141969 58315
203297 225663
192833 74643
223470 99863
272704 178999
163551 250862
133718 39962
199271 24737
159107 66084
139074 91207
229404 47856
273704 12...

output:

1
211007 141316

result:

ok Good Job! (1 test case)

Test #20:

score: 0
Accepted
time: 35ms
memory: 3564kb

input:

3000
100
9 37
30 16
87 75
66 20
89 79
78 72
48 5
62 100
61 95
69 93
23 86
18 48
32 24
91 43
54 93
92 63
15 7
6 92
67 35
65 89
8 26
21 98
1 65
40 85
36 41
77 39
56 44
69 70
46 67
80 60
94 96
14 36
34 99
84 62
22 74
23 79
46 19
27 51
11 14
18 70
85 8
73 6
97 40
71 83
41 98
61 87
2 90
45 5
20 44
17 81
...

output:

1
25 2
1
31 82
1
82 48
1
95 51
1
88 58
1
31 51
1
98 14
1
33 95
1
41 29
1
80 22
1
11 90
1
1 57
1
7 75
1
80 25
1
26 60
1
14 53
1
63 1
1
7 17
1
8 1
1
100 33
1
50 54
1
11 57
1
88 30
1
28 99
1
23 69
1
34 87
1
8 32
1
94 77
1
30 70
1
4 74
1
34 75
1
71 99
1
99 23
1
81 5
1
34 29
1
46 26
1
56 27
1
72 19
1
60 ...

result:

ok Good Job! (3000 test cases)

Test #21:

score: 0
Accepted
time: 99ms
memory: 41748kb

input:

1
299999
123584 153306
137396 100430
114758 125355
180598 13155
156317 178522
124889 6811
41530 27377
104587 35237
157908 235884
130785 44576
141969 129416
225663 203297
120350 74643
20300 99863
295855 178999
198163 250862
133718 148059
24737 199271
66084 159107
91207 139074
229404 89529
273704 1565...

output:

149999
43304 17055
188599 35439
58512 107518
186928 230073
98141 35597
149381 287164
200178 115771
116186 209283
159889 36147
244709 88779
136934 93170
224861 107491
199032 152777
135168 146413
28926 269441
18334 104131
164775 20526
26186 8029
60522 200589
120471 288620
108039 195883
185748 233945
1...

result:

ok Good Job! (1 test case)

Test #22:

score: 0
Accepted
time: 68ms
memory: 7504kb

input:

10
29999
29014 14470
26823 2725
13020 1832
9002 521
22160 26983
2964 2174
20830 22020
19201 4850
19060 10457
23936 2163
22700 29072
28735 4318
15942 8678
10533 9761
8946 29013
12121 555
14303 26560
18146 20485
16984 345
22717 347
21795 27399
20125 489
6200 24303
21419 17994
28274 28769
28326 25399
1...

output:

14999
2775 8776
11678 25755
15475 25594
461 22562
6750 24659
4650 18880
6053 7371
9476 17915
13357 21533
19027 19140
15969 23088
14170 22253
20941 23182
4413 24488
1801 22031
7843 9030
4928 27072
3438 9575
10543 16292
24290 28239
4422 27148
1202 23852
12834 25198
8195 28114
16961 24658
22780 29114
2...

result:

ok Good Job! (10 test cases)

Test #23:

score: 0
Accepted
time: 88ms
memory: 22424kb

input:

1
299999
258553 127891
200368 10642
134395 33327
66807 64283
298570 239432
106569 74919
101275 256095
215172 160205
258907 145255
294970 120844
120747 17359
231598 191111
103394 179995
276483 13575
153143 236649
32255 165538
13973 180565
114480 173795
280161 260850
239991 6207
137809 102438
160694 2...

output:

149999
92390 222044
11294 241127
14370 141478
3951 223937
7074 139156
50173 129918
167198 209299
212141 229898
127354 161312
8203 109169
24766 29957
101338 280086
248952 260323
82135 126932
42115 48692
194920 261713
12430 109182
73887 233814
148081 277248
84713 142149
206144 296999
10837 240714
1100...

result:

ok Good Job! (1 test case)

Test #24:

score: 0
Accepted
time: 73ms
memory: 5744kb

input:

10
29999
21547 280
5396 29060
21129 24483
1948 5302
5994 20221
12679 20525
23088 2218
24614 17646
9854 7760
23220 29541
9824 25475
9144 8680
17400 22930
3583 13702
14210 16949
4145 4827
4927 15200
5195 13939
23998 23812
20779 22916
19383 23442
29184 11705
12676 19405
4120 11612
24747 1107
25087 1775...

output:

14999
1019 9155
9205 18515
4946 19000
2653 8049
12646 25638
3410 7558
17746 28669
3752 6505
10925 23391
5583 7686
11389 13971
15301 19175
21301 24397
11824 27999
9257 25866
12613 20745
21184 25576
2981 6377
10202 14875
14935 17385
5784 23433
3048 23471
10743 15711
13140 14651
22485 25099
16522 25672...

result:

ok Good Job! (10 test cases)

Test #25:

score: 0
Accepted
time: 44ms
memory: 3532kb

input:

27000
11
3 5
11 3
2 3
7 1
10 8
8 6
9 8
3 1
8 4
1 8
11
3 1
1 2
5 6
11 1
6 9
10 6
4 8
1 5
1 7
5 8
11
1 3
6 11
4 6
10 1
1 8
2 6
7 11
1 9
11 1
6 5
11
3 7
6 8
11 3
9 6
3 8
6 4
1 8
5 9
10 3
2 9
11
8 5
6 8
11 5
8 2
7 11
4 5
8 9
3 10
3 11
8 1
11
7 3
2 3
9 1
8 10
8 1
9 5
3 9
4 1
6 8
11 3
11
8 5
8 1
6 8
11 8
...

output:

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

result:

ok Good Job! (27000 test cases)

Test #26:

score: 0
Accepted
time: 56ms
memory: 3560kb

input:

30000
6
5 3
6 2
4 1
1 3
2 1
4
4 2
1 4
1 3
11
9 1
10 11
11 3
11 9
4 6
3 7
2 11
1 6
1 5
8 9
17
6 15
10 7
8 17
13 11
3 8
15 4
16 3
12 4
15 10
2 6
6 9
5 13
5 14
2 1
10 5
8 15
14
14 5
1 6
12 4
8 14
5 9
13 5
4 9
1 13
7 13
5 3
11 14
5 10
2 13
12
3 6
5 1
8 3
12 2
12 7
5 4
9 4
11 10
6 12
12 5
4 11
17
15 11
1...

output:

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

result:

ok Good Job! (30000 test cases)

Test #27:

score: 0
Accepted
time: 75ms
memory: 18456kb

input:

1
253253
50359 179100
159762 56963
156480 129546
194694 165531
171829 15612
8904 244239
167203 79755
59278 193676
6064 179420
93089 11873
208865 161063
72803 55831
6938 69443
182632 252034
15492 123140
26694 88239
59982 95642
209852 233064
205527 137224
222851 93508
28102 71250
250703 159154
54445 3...

output:

84362
95665 136744
182926 82941
89396 196522
229580 241889
173713 34576
55241 96768
31213 124353
174187 159836
43995 244595
214087 244383
126450 132249
19300 203793
20451 22103
222906 64668
231505 164766
204575 199115
106859 80871
126439 191275
231679 171500
242367 84216
62650 152244
200360 16245
81...

result:

ok Good Job! (1 test case)

Test #28:

score: 0
Accepted
time: 51ms
memory: 3788kb

input:

300
1855
1007 450
4 615
1845 844
426 65
1135 79
1020 1386
935 343
936 16
219 1370
1495 131
1409 13
1087 31
63 804
145 1689
1750 1731
694 623
243 626
418 1383
1396 990
1234 385
867 969
779 337
615 732
657 286
1134 1651
269 582
903 1755
478 1384
1360 1060
144 1082
217 1537
185 61
1634 1813
313 876
879...

output:

612
48 1113
1036 1600
90 1087
138 755
352 1033
300 1140
1335 1741
548 556
721 1452
154 301
221 1209
234 1040
452 754
10 1442
340 551
315 489
1718 440
1118 978
1801 642
1399 1077
946 1636
1132 1225
1844 1449
1368 77
367 430
38 979
1083 1699
1747 470
435 1781
1516 373
587 703
357 1756
252 1100
1103 15...

result:

ok Good Job! (300 test cases)

Test #29:

score: 0
Accepted
time: 90ms
memory: 21300kb

input:

1
297722
2542 280838
47066 211579
45334 161254
161254 3387
161254 81700
286925 161254
188708 161254
163323 239454
177641 142518
161254 141588
161254 289112
161254 132883
161254 264103
161254 7898
131553 35341
274424 85972
161254 111454
161254 245526
195088 87188
83391 252892
74347 144981
248942 2949...

output:

49500
5 22
23 25
41 55
59 61
66 95
105 129
136 138
149 170
171 186
187 188
192 193
220 242
257 261
264 267
268 272
278 295
296 299
325 353
358 362
366 370
378 392
412 430
432 446
452 508
515 530
532 570
581 594
597 608
622 632
642 647
650 654
663 675
685 689
731 827
857 872
889 900
902 903
958 967
9...

result:

ok Good Job! (1 test case)

Test #30:

score: 0
Accepted
time: 74ms
memory: 23036kb

input:

1
297687
114063 114325
61315 256781
17004 254276
279378 173674
50685 133866
254276 270764
254276 168958
160573 254276
183000 144763
254276 41646
138547 226105
254276 62934
250757 284583
254276 147160
254276 62486
163839 23030
246684 80048
219153 38897
254276 184254
297273 295022
146005 254276
229491...

output:

74500
18 22
23 31
43 44
51 73
81 86
90 108
109 114
126 127
142 148
159 163
166 167
168 172
175 176
180 191
193 216
219 222
229 234
239 240
243 244
249 254
265 269
273 277
284 300
305 317
318 325
341 350
359 373
382 385
393 400
405 410
423 430
433 435
443 444
453 454
460 471
481 492
504 513
521 522
5...

result:

ok Good Job! (1 test case)

Test #31:

score: 0
Accepted
time: 88ms
memory: 23640kb

input:

1
298467
24310 131068
270342 284416
110818 163791
140749 270342
200509 156894
128257 270342
286273 39457
230236 150598
48559 18558
271934 270342
270342 221456
270342 240611
146171 270342
142089 270342
265273 37099
4824 207615
273677 270342
270342 233942
131877 270342
282024 14594
58550 270342
3225 1...

output:

99500
2 9
10 12
14 19
20 21
24 26
27 32
34 35
36 38
42 46
47 52
54 56
59 65
66 68
70 71
72 78
79 87
95 98
99 101
102 103
104 106
108 110
112 113
122 125
131 132
135 137
139 142
146 150
151 154
155 161
163 164
170 176
177 181
188 189
194 200
212 213
215 218
221 223
226 229
230 239
240 246
249 254
256...

result:

ok Good Job! (1 test case)

Test #32:

score: 0
Accepted
time: 79ms
memory: 26172kb

input:

1
299096
43798 64829
64829 22308
25723 64829
125491 64829
132554 64829
64829 31091
82698 64829
161922 64829
64829 48363
153172 64829
198568 64829
64829 68075
246874 64829
64829 122620
64829 237999
64829 257438
44676 64829
64829 295759
64829 45750
64829 17755
195879 64829
86788 64829
172696 64829
648...

output:

-1

result:

ok Good Job! (1 test case)

Test #33:

score: 0
Accepted
time: 80ms
memory: 26452kb

input:

1
299097
55978 208819
55978 222666
55978 118386
176498 55978
177724 55978
55978 286400
7823 55978
55978 86011
258404 55978
55978 127466
55978 52857
34668 55978
31665 55978
55978 160320
55978 239002
290038 55978
55978 36827
55978 280050
55978 104777
55978 158847
52282 55978
206198 55978
55978 58412
1...

output:

149548
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
1...

result:

ok Good Job! (1 test case)

Test #34:

score: 0
Accepted
time: 95ms
memory: 27496kb

input:

1
299097
166438 82625
82625 128838
82625 141580
83485 82625
82625 210941
82625 40444
82625 45514
112980 82625
82625 8971
82625 240680
53717 82625
82625 243508
275918 82625
82625 214884
80291 82625
82625 244056
278345 82625
82625 50552
82625 84626
234287 82625
227857 82625
82625 282783
82625 169441
1...

output:

149548
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
1...

result:

ok Good Job! (1 test case)

Test #35:

score: 0
Accepted
time: 91ms
memory: 27392kb

input:

1
299097
260330 58892
133029 58892
58892 172471
42729 58892
58892 26074
58892 99490
58892 3974
59464 58892
58892 186328
119256 58892
225649 58892
162394 58892
58892 128284
58892 215895
281775 58892
275533 58892
58892 149488
167782 58892
22771 58892
58892 63000
58892 9677
83128 58892
58892 121018
588...

output:

149548
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
1...

result:

ok Good Job! (1 test case)

Test #36:

score: 0
Accepted
time: 70ms
memory: 6012kb

input:

10
29462
10852 16001
15495 6444
21756 23481
23752 13053
21560 13691
9711 23194
24917 23476
13053 18916
5 8995
17585 23447
644 13053
27831 13053
22383 10656
15443 21538
10814 3308
4868 2089
23555 13053
25895 13053
12345 13893
13053 14041
13053 8611
4444 15324
23999 27186
27037 13053
23208 22273
22940...

output:

4950
9 14
16 19
24 98
140 141
163 175
183 184
209 216
221 223
237 281
289 292
300 330
404 407
412 446
451 456
492 500
513 531
542 555
559 564
607 609
616 624
635 647
684 692
702 719
729 737
741 744
760 766
777 782
785 802
822 831
833 834
842 931
933 940
947 960
970 981
992 999
1003 1013
1014 1033
10...

result:

ok Good Job! (10 test cases)

Test #37:

score: 0
Accepted
time: 44ms
memory: 3932kb

input:

100
2959
1769 2187
2304 2429
2635 1931
271 2342
1671 153
707 1154
2597 1668
1048 204
1242 1301
926 2013
1557 2752
488 1893
613 1809
1416 2395
120 1179
982 321
2686 86
2313 2009
878 848
1447 2207
728 1885
2812 1683
1290 1627
2701 135
933 1099
1719 393
2355 2519
1368 384
311 1080
823 1642
459 2670
266...

output:

50
2022 2596
1041 2141
338 957
2614 31
1713 2165
2535 655
1384 419
486 804
2340 1400
1428 234
855 2657
1518 1481
1131 2066
950 2646
2515 1766
2178 2585
27 1500
1522 1879
1226 579
1854 1515
2182 126
651 1618
2483 2624
2193 2300
2944 1191
2190 2397
2329 1153
1885 1477
165 945
1916 2377
1205 239
2750 4...

result:

ok Good Job! (100 test cases)

Test #38:

score: 0
Accepted
time: 44ms
memory: 3896kb

input:

1000
294
200 192
200 46
43 256
85 47
98 12
127 200
111 127
257 124
168 32
45 274
197 49
200 27
144 38
156 256
148 202
200 80
31 248
35 66
282 128
60 200
189 37
88 54
238 280
44 245
46 263
220 53
144 200
200 55
58 184
200 153
84 173
31 284
24 170
200 211
22 244
232 242
200 208
188 26
139 154
251 104
...

output:

48
62 69
103 125
142 169
172 182
191 206
208 215
235 258
278 279
285 293
2 40
48 50
105 133
135 150
155 164
205 207
242 254
263 281
5 6
16 21
32 114
118 122
124 140
141 177
193 201
222 224
231 240
266 3
7 9
11 34
44 51
72 85
92 93
94 95
97 102
128 165
176 216
243 246
261 265
291 8
13 73
74 78
89 116...

result:

ok Good Job! (1000 test cases)

Test #39:

score: 0
Accepted
time: 93ms
memory: 22584kb

input:

1
299997
253129 238438
256990 147794
56683 265606
62100 74831
58006 231602
227120 138613
72936 16010
271383 221839
110579 31739
13864 11106
196180 159069
78858 61661
262511 279235
45738 172410
2512 6066
144552 29625
194524 184023
196218 229474
256817 33532
166763 175023
188106 91596
93278 158818
280...

output:

149998
175959 176473
57334 201726
217612 281911
36373 257198
65486 68390
167407 211783
274759 281878
60575 274605
162972 278200
25072 164876
234622 279825
58173 101223
10659 269954
63044 264434
56941 243385
71526 149988
2922 18532
42814 277458
153772 154472
178902 260561
26098 81526
225690 254300
44...

result:

ok Good Job! (1 test case)

Test #40:

score: 0
Accepted
time: 96ms
memory: 22560kb

input:

1
299995
251405 13382
21412 273614
170998 239060
142811 89087
163686 80590
54073 23173
29717 93866
155059 150414
171846 663
218307 10405
252692 83378
131202 289721
52385 252854
293096 280491
216796 237285
242784 243233
52784 6922
68312 26488
205497 147202
65036 297840
58601 67107
164525 57839
167843...

output:

149997
93943 248641
233514 239473
94378 204883
24552 48430
80645 80866
153685 170751
215288 218267
18261 30450
48009 91179
184867 214914
222596 289892
17841 178213
140661 264256
17024 86560
48057 133394
192704 239172
64377 91114
34119 209672
169511 252185
106647 291613
9416 284088
105013 161580
7503...

result:

ok Good Job! (1 test case)

Test #41:

score: 0
Accepted
time: 97ms
memory: 22296kb

input:

1
299993
5467 110867
249637 87281
209055 74176
170317 272027
19928 97403
158898 19368
120942 93881
150886 63314
221175 188504
125295 79790
241291 263489
258417 196595
157362 130040
163372 85682
261036 45856
257946 163512
54262 17552
251249 14029
213457 65927
265238 36030
4861 71772
159755 111439
375...

output:

149996
6066 121203
290783 299544
27187 220272
35701 208591
140867 261005
109378 281472
103429 104348
181434 218655
146346 187813
8954 44110
40858 57408
237594 243321
12745 50623
127984 239127
19636 82950
146459 295273
211144 289569
16476 141493
167525 215575
178895 185613
101998 130475
17311 21516
1...

result:

ok Good Job! (1 test case)

Test #42:

score: 0
Accepted
time: 99ms
memory: 22436kb

input:

1
299991
248982 174625
105559 244297
35265 128781
206509 158409
13863 41023
249166 59270
215265 188850
218206 113138
126624 205065
241101 283870
31511 34427
237845 182965
134293 221193
214509 104965
67564 158810
198261 216053
115921 200242
245392 107170
62619 285117
48060 132083
166094 84748
150023 ...

output:

149995
185970 242554
68245 163974
17570 275031
8647 74728
113530 165822
133436 177767
120348 164522
185612 269584
174809 204252
210260 263928
270105 296723
51263 51951
175861 286897
171673 253910
61304 220959
55567 138637
4907 264404
35410 84741
249943 288106
45857 60373
71352 83512
135062 268084
18...

result:

ok Good Job! (1 test case)

Test #43:

score: 0
Accepted
time: 98ms
memory: 21648kb

input:

1
299999
185541 176688
252501 252009
201515 181336
174664 10052
235206 78841
271650 240453
177704 41444
30343 236755
136584 224074
123830 176470
119252 294416
176341 111829
241834 52983
35945 184402
68227 225761
146133 151540
249663 70136
156441 42951
95322 152829
259090 103376
84766 152588
150129 1...

output:

149999
16024 111710
95256 118103
5704 161819
66836 78004
11900 157569
90897 194167
52885 108844
11191 58301
12286 114100
44643 194821
123856 198622
14686 215230
17631 231681
191428 234893
9944 41663
4762 218383
118499 233479
79515 89104
45522 68925
97397 202291
143480 233980
2600 22702
110255 162409...

result:

ok Good Job! (1 test case)

Test #44:

score: 0
Accepted
time: 85ms
memory: 21736kb

input:

1
299997
46586 268160
120257 162918
155586 87070
233774 236522
195573 139640
213343 184602
26338 174317
236326 103114
246267 241694
166020 217647
73806 217138
115817 291894
296219 281396
231138 217264
57086 215561
296205 295067
174916 36910
262907 177629
268640 277927
33944 172724
299448 298104
2913...

output:

149998
46890 78700
110839 112083
4056 165167
197940 214539
15118 138541
77280 109318
28759 153930
109708 218926
4633 223028
167537 269392
127770 270418
54403 96810
12862 187980
50783 65374
212772 219964
51465 144214
110130 150907
9999 167850
16030 82460
183729 201946
45287 123513
167582 211450
25085...

result:

ok Good Job! (1 test case)

Test #45:

score: 0
Accepted
time: 52ms
memory: 4036kb

input:

100
2997
1842 108
983 1626
2076 2280
1960 2673
2029 1154
1506 836
144 1843
173 1775
322 1567
1632 1092
2608 2819
2737 2888
24 2046
400 2487
2396 2569
2072 1695
2223 2237
2175 592
694 2236
2523 2322
2211 2325
2196 2888
1509 1586
2376 2272
2063 2310
2471 2612
2530 2101
1618 25
1830 1404
2646 743
2256 ...

output:

1498
220 1340
832 1663
636 816
213 1932
447 496
722 2080
435 2253
1019 1336
1504 2277
497 2364
1109 1279
1824 2516
517 2546
813 1069
2488 2845
610 1498
1335 2016
98 1028
590 986
554 1792
602 1827
1911 2087
306 704
1002 1808
1859 2602
979 1385
751 1901
734 2660
640 2775
2809 2838
2375 2846
502 625
18...

result:

ok Good Job! (100 test cases)

Extra Test:

score: 0
Extra Test Passed