# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
118579 | 2019-06-19T09:13:35 Z | dolphingarlic | Network (BOI15_net) | C++14 | 926 ms | 47860 KB |
#include <bits/stdc++.h> using namespace std; vector<int> graph[500001], leaves; void dfs(int node = 1, int parent = 0) { // cout << node << ' ' << parent << '\n'; if (graph[node].size() == 1) leaves.push_back(node); for (int i : graph[node]) { if (i == parent) continue; dfs(i, node); } } int main() { int n; cin >> n; for (int i = 0; i < n - 1; i++) { int a, b; cin >> a >> b; graph[a].push_back(b); graph[b].push_back(a); } // for (int i : graph[4]) cout << i << ' '; // cout << '\n'; dfs(); // for (int i : leaves) cout << i << ' '; // cout << '\n'; cout << (leaves.size() + 1) / 2 << '\n'; for (int i = 0; i < (leaves.size() + 1) / 2; i++) cout << leaves[i] << ' ' << leaves[i + leaves.size() / 2] << '\n'; return 0; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 11 ms | 12032 KB | Output is correct |
2 | Correct | 11 ms | 12032 KB | Output is correct |
3 | Correct | 12 ms | 12160 KB | Output is correct |
4 | Correct | 11 ms | 12032 KB | Output is correct |
5 | Correct | 12 ms | 12032 KB | Output is correct |
6 | Correct | 11 ms | 12032 KB | Output is correct |
7 | Correct | 11 ms | 12032 KB | Output is correct |
8 | Correct | 12 ms | 12032 KB | Output is correct |
9 | Correct | 15 ms | 12060 KB | Output is correct |
10 | Correct | 12 ms | 12032 KB | Output is correct |
11 | Correct | 12 ms | 12032 KB | Output is correct |
12 | Correct | 13 ms | 12032 KB | Output is correct |
13 | Correct | 14 ms | 12032 KB | Output is correct |
14 | Correct | 12 ms | 12032 KB | Output is correct |
15 | Correct | 12 ms | 12024 KB | Output is correct |
16 | Correct | 12 ms | 12032 KB | Output is correct |
17 | Correct | 12 ms | 12032 KB | Output is correct |
18 | Correct | 12 ms | 12032 KB | Output is correct |
19 | Correct | 12 ms | 12032 KB | Output is correct |
20 | Correct | 13 ms | 11992 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 11 ms | 12032 KB | Output is correct |
2 | Correct | 11 ms | 12032 KB | Output is correct |
3 | Correct | 12 ms | 12160 KB | Output is correct |
4 | Correct | 11 ms | 12032 KB | Output is correct |
5 | Correct | 12 ms | 12032 KB | Output is correct |
6 | Correct | 11 ms | 12032 KB | Output is correct |
7 | Correct | 11 ms | 12032 KB | Output is correct |
8 | Correct | 12 ms | 12032 KB | Output is correct |
9 | Correct | 15 ms | 12060 KB | Output is correct |
10 | Correct | 12 ms | 12032 KB | Output is correct |
11 | Correct | 12 ms | 12032 KB | Output is correct |
12 | Correct | 13 ms | 12032 KB | Output is correct |
13 | Correct | 14 ms | 12032 KB | Output is correct |
14 | Correct | 12 ms | 12032 KB | Output is correct |
15 | Correct | 12 ms | 12024 KB | Output is correct |
16 | Correct | 12 ms | 12032 KB | Output is correct |
17 | Correct | 12 ms | 12032 KB | Output is correct |
18 | Correct | 12 ms | 12032 KB | Output is correct |
19 | Correct | 12 ms | 12032 KB | Output is correct |
20 | Correct | 13 ms | 11992 KB | Output is correct |
21 | Correct | 13 ms | 12032 KB | Output is correct |
22 | Correct | 13 ms | 12160 KB | Output is correct |
23 | Correct | 13 ms | 12160 KB | Output is correct |
24 | Correct | 14 ms | 12160 KB | Output is correct |
25 | Correct | 14 ms | 12160 KB | Output is correct |
26 | Correct | 19 ms | 12152 KB | Output is correct |
27 | Correct | 15 ms | 12152 KB | Output is correct |
28 | Correct | 13 ms | 12160 KB | Output is correct |
29 | Correct | 13 ms | 12160 KB | Output is correct |
30 | Correct | 13 ms | 12032 KB | Output is correct |
31 | Correct | 15 ms | 12160 KB | Output is correct |
32 | Correct | 13 ms | 12032 KB | Output is correct |
33 | Correct | 13 ms | 12032 KB | Output is correct |
34 | Correct | 12 ms | 12032 KB | Output is correct |
35 | Correct | 12 ms | 12004 KB | Output is correct |
36 | Correct | 13 ms | 12032 KB | Output is correct |
37 | Correct | 12 ms | 12160 KB | Output is correct |
38 | Correct | 12 ms | 12160 KB | Output is correct |
39 | Correct | 12 ms | 12032 KB | Output is correct |
40 | Correct | 12 ms | 12032 KB | Output is correct |
41 | Correct | 13 ms | 12032 KB | Output is correct |
42 | Correct | 12 ms | 12032 KB | Output is correct |
43 | Correct | 12 ms | 12032 KB | Output is correct |
44 | Correct | 12 ms | 12032 KB | Output is correct |
45 | Correct | 13 ms | 12032 KB | Output is correct |
46 | Correct | 14 ms | 12160 KB | Output is correct |
47 | Correct | 13 ms | 12032 KB | Output is correct |
48 | Correct | 12 ms | 12160 KB | Output is correct |
49 | Correct | 14 ms | 12160 KB | Output is correct |
50 | Correct | 13 ms | 12152 KB | Output is correct |
51 | Correct | 13 ms | 12032 KB | Output is correct |
52 | Correct | 13 ms | 12032 KB | Output is correct |
53 | Correct | 13 ms | 12160 KB | Output is correct |
54 | Correct | 12 ms | 12032 KB | Output is correct |
55 | Correct | 12 ms | 12160 KB | Output is correct |
56 | Correct | 12 ms | 12032 KB | Output is correct |
57 | Correct | 13 ms | 12160 KB | Output is correct |
58 | Correct | 13 ms | 12160 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 11 ms | 12032 KB | Output is correct |
2 | Correct | 11 ms | 12032 KB | Output is correct |
3 | Correct | 12 ms | 12160 KB | Output is correct |
4 | Correct | 11 ms | 12032 KB | Output is correct |
5 | Correct | 12 ms | 12032 KB | Output is correct |
6 | Correct | 11 ms | 12032 KB | Output is correct |
7 | Correct | 11 ms | 12032 KB | Output is correct |
8 | Correct | 12 ms | 12032 KB | Output is correct |
9 | Correct | 15 ms | 12060 KB | Output is correct |
10 | Correct | 12 ms | 12032 KB | Output is correct |
11 | Correct | 12 ms | 12032 KB | Output is correct |
12 | Correct | 13 ms | 12032 KB | Output is correct |
13 | Correct | 14 ms | 12032 KB | Output is correct |
14 | Correct | 12 ms | 12032 KB | Output is correct |
15 | Correct | 12 ms | 12024 KB | Output is correct |
16 | Correct | 12 ms | 12032 KB | Output is correct |
17 | Correct | 12 ms | 12032 KB | Output is correct |
18 | Correct | 12 ms | 12032 KB | Output is correct |
19 | Correct | 12 ms | 12032 KB | Output is correct |
20 | Correct | 13 ms | 11992 KB | Output is correct |
21 | Correct | 13 ms | 12032 KB | Output is correct |
22 | Correct | 13 ms | 12160 KB | Output is correct |
23 | Correct | 13 ms | 12160 KB | Output is correct |
24 | Correct | 14 ms | 12160 KB | Output is correct |
25 | Correct | 14 ms | 12160 KB | Output is correct |
26 | Correct | 19 ms | 12152 KB | Output is correct |
27 | Correct | 15 ms | 12152 KB | Output is correct |
28 | Correct | 13 ms | 12160 KB | Output is correct |
29 | Correct | 13 ms | 12160 KB | Output is correct |
30 | Correct | 13 ms | 12032 KB | Output is correct |
31 | Correct | 15 ms | 12160 KB | Output is correct |
32 | Correct | 13 ms | 12032 KB | Output is correct |
33 | Correct | 13 ms | 12032 KB | Output is correct |
34 | Correct | 12 ms | 12032 KB | Output is correct |
35 | Correct | 12 ms | 12004 KB | Output is correct |
36 | Correct | 13 ms | 12032 KB | Output is correct |
37 | Correct | 12 ms | 12160 KB | Output is correct |
38 | Correct | 12 ms | 12160 KB | Output is correct |
39 | Correct | 12 ms | 12032 KB | Output is correct |
40 | Correct | 12 ms | 12032 KB | Output is correct |
41 | Correct | 13 ms | 12032 KB | Output is correct |
42 | Correct | 12 ms | 12032 KB | Output is correct |
43 | Correct | 12 ms | 12032 KB | Output is correct |
44 | Correct | 12 ms | 12032 KB | Output is correct |
45 | Correct | 13 ms | 12032 KB | Output is correct |
46 | Correct | 14 ms | 12160 KB | Output is correct |
47 | Correct | 13 ms | 12032 KB | Output is correct |
48 | Correct | 12 ms | 12160 KB | Output is correct |
49 | Correct | 14 ms | 12160 KB | Output is correct |
50 | Correct | 13 ms | 12152 KB | Output is correct |
51 | Correct | 13 ms | 12032 KB | Output is correct |
52 | Correct | 13 ms | 12032 KB | Output is correct |
53 | Correct | 13 ms | 12160 KB | Output is correct |
54 | Correct | 12 ms | 12032 KB | Output is correct |
55 | Correct | 12 ms | 12160 KB | Output is correct |
56 | Correct | 12 ms | 12032 KB | Output is correct |
57 | Correct | 13 ms | 12160 KB | Output is correct |
58 | Correct | 13 ms | 12160 KB | Output is correct |
59 | Correct | 611 ms | 36144 KB | Output is correct |
60 | Correct | 729 ms | 39016 KB | Output is correct |
61 | Correct | 13 ms | 12032 KB | Output is correct |
62 | Correct | 12 ms | 12032 KB | Output is correct |
63 | Correct | 531 ms | 33588 KB | Output is correct |
64 | Correct | 15 ms | 12544 KB | Output is correct |
65 | Correct | 36 ms | 14032 KB | Output is correct |
66 | Correct | 274 ms | 27896 KB | Output is correct |
67 | Correct | 839 ms | 47080 KB | Output is correct |
68 | Correct | 892 ms | 47860 KB | Output is correct |
69 | Correct | 27 ms | 12920 KB | Output is correct |
70 | Correct | 181 ms | 21460 KB | Output is correct |
71 | Correct | 578 ms | 41844 KB | Output is correct |
72 | Correct | 583 ms | 40800 KB | Output is correct |
73 | Correct | 180 ms | 19056 KB | Output is correct |
74 | Correct | 767 ms | 37884 KB | Output is correct |
75 | Correct | 67 ms | 15352 KB | Output is correct |
76 | Correct | 607 ms | 41492 KB | Output is correct |
77 | Correct | 603 ms | 41680 KB | Output is correct |
78 | Correct | 80 ms | 15352 KB | Output is correct |
79 | Correct | 926 ms | 45432 KB | Output is correct |
80 | Correct | 16 ms | 12288 KB | Output is correct |
81 | Correct | 226 ms | 21340 KB | Output is correct |
82 | Correct | 709 ms | 39528 KB | Output is correct |
83 | Correct | 750 ms | 37796 KB | Output is correct |
84 | Correct | 746 ms | 37744 KB | Output is correct |
85 | Correct | 785 ms | 37780 KB | Output is correct |
86 | Correct | 760 ms | 38884 KB | Output is correct |
87 | Correct | 744 ms | 38888 KB | Output is correct |