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답안 #911161

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
911161 2024-01-18T13:48:01 Z ttamx Network (BOI15_net) C++14
100 / 100
 410 ms 41160 KB 
#include<bits/stdc++.h>

using namespace std;

const int N=5e5+5;

int n;
vector<int> adj[N],comp;

void dfs(int u,int p=0){
    if(adj[u].size()==1)comp.emplace_back(u);
    for(auto v:adj[u])if(v!=p)dfs(v,u);
}

int main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n;
    for(int i=1;i<n;i++){
        int u,v;
        cin >> u >> v;
        adj[u].emplace_back(v);
        adj[v].emplace_back(u);
    }
    dfs(1);
    comp.emplace_back(1);
    int ans=comp.size()/2;
    cout << ans << "\n";
    for(int i=0;i<ans;i++)cout << comp[i] << " " << comp[i+ans] << "\n";
}

Subtask #1
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 4 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12124 KB Output is correct
8 Correct 4 ms 12124 KB Output is correct
9 Correct 3 ms 12124 KB Output is correct
10 Correct 4 ms 12632 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 3 ms 12124 KB Output is correct
13 Correct 3 ms 12124 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 3 ms 12124 KB Output is correct
16 Correct 4 ms 12120 KB Output is correct
17 Correct 4 ms 12124 KB Output is correct
18 Correct 4 ms 12120 KB Output is correct
19 Correct 4 ms 12124 KB Output is correct
20 Correct 3 ms 12124 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 4 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12124 KB Output is correct
8 Correct 4 ms 12124 KB Output is correct
9 Correct 3 ms 12124 KB Output is correct
10 Correct 4 ms 12632 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 3 ms 12124 KB Output is correct
13 Correct 3 ms 12124 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 3 ms 12124 KB Output is correct
16 Correct 4 ms 12120 KB Output is correct
17 Correct 4 ms 12124 KB Output is correct
18 Correct 4 ms 12120 KB Output is correct
19 Correct 4 ms 12124 KB Output is correct
20 Correct 3 ms 12124 KB Output is correct
21 Correct 4 ms 12124 KB Output is correct
22 Correct 4 ms 12120 KB Output is correct
23 Correct 5 ms 12120 KB Output is correct
24 Correct 4 ms 12120 KB Output is correct
25 Correct 4 ms 12124 KB Output is correct
26 Correct 4 ms 12124 KB Output is correct
27 Correct 4 ms 12124 KB Output is correct
28 Correct 4 ms 12124 KB Output is correct
29 Correct 4 ms 12124 KB Output is correct
30 Correct 3 ms 12124 KB Output is correct
31 Correct 4 ms 12120 KB Output is correct
32 Correct 3 ms 12124 KB Output is correct
33 Correct 3 ms 12124 KB Output is correct
34 Correct 4 ms 12124 KB Output is correct
35 Correct 4 ms 12124 KB Output is correct
36 Correct 4 ms 12124 KB Output is correct
37 Correct 4 ms 12124 KB Output is correct
38 Correct 4 ms 12124 KB Output is correct
39 Correct 3 ms 12124 KB Output is correct
40 Correct 4 ms 12120 KB Output is correct
41 Correct 5 ms 12120 KB Output is correct
42 Correct 3 ms 12124 KB Output is correct
43 Correct 5 ms 12124 KB Output is correct
44 Correct 3 ms 12124 KB Output is correct
45 Correct 3 ms 12124 KB Output is correct
46 Correct 4 ms 12124 KB Output is correct
47 Correct 3 ms 12124 KB Output is correct
48 Correct 3 ms 12120 KB Output is correct
49 Correct 3 ms 12124 KB Output is correct
50 Correct 3 ms 12124 KB Output is correct
51 Correct 5 ms 12124 KB Output is correct
52 Correct 4 ms 12124 KB Output is correct
53 Correct 4 ms 12124 KB Output is correct
54 Correct 4 ms 12124 KB Output is correct
55 Correct 4 ms 12124 KB Output is correct
56 Correct 3 ms 12124 KB Output is correct
57 Correct 4 ms 12120 KB Output is correct
58 Correct 4 ms 12136 KB Output is correct

Subtask #3
37.0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 4 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12124 KB Output is correct
8 Correct 4 ms 12124 KB Output is correct
9 Correct 3 ms 12124 KB Output is correct
10 Correct 4 ms 12632 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 3 ms 12124 KB Output is correct
13 Correct 3 ms 12124 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 3 ms 12124 KB Output is correct
16 Correct 4 ms 12120 KB Output is correct
17 Correct 4 ms 12124 KB Output is correct
18 Correct 4 ms 12120 KB Output is correct
19 Correct 4 ms 12124 KB Output is correct
20 Correct 3 ms 12124 KB Output is correct
21 Correct 4 ms 12124 KB Output is correct
22 Correct 4 ms 12120 KB Output is correct
23 Correct 5 ms 12120 KB Output is correct
24 Correct 4 ms 12120 KB Output is correct
25 Correct 4 ms 12124 KB Output is correct
26 Correct 4 ms 12124 KB Output is correct
27 Correct 4 ms 12124 KB Output is correct
28 Correct 4 ms 12124 KB Output is correct
29 Correct 4 ms 12124 KB Output is correct
30 Correct 3 ms 12124 KB Output is correct
31 Correct 4 ms 12120 KB Output is correct
32 Correct 3 ms 12124 KB Output is correct
33 Correct 3 ms 12124 KB Output is correct
34 Correct 4 ms 12124 KB Output is correct
35 Correct 4 ms 12124 KB Output is correct
36 Correct 4 ms 12124 KB Output is correct
37 Correct 4 ms 12124 KB Output is correct
38 Correct 4 ms 12124 KB Output is correct
39 Correct 3 ms 12124 KB Output is correct
40 Correct 4 ms 12120 KB Output is correct
41 Correct 5 ms 12120 KB Output is correct
42 Correct 3 ms 12124 KB Output is correct
43 Correct 5 ms 12124 KB Output is correct
44 Correct 3 ms 12124 KB Output is correct
45 Correct 3 ms 12124 KB Output is correct
46 Correct 4 ms 12124 KB Output is correct
47 Correct 3 ms 12124 KB Output is correct
48 Correct 3 ms 12120 KB Output is correct
49 Correct 3 ms 12124 KB Output is correct
50 Correct 3 ms 12124 KB Output is correct
51 Correct 5 ms 12124 KB Output is correct
52 Correct 4 ms 12124 KB Output is correct
53 Correct 4 ms 12124 KB Output is correct
54 Correct 4 ms 12124 KB Output is correct
55 Correct 4 ms 12124 KB Output is correct
56 Correct 3 ms 12124 KB Output is correct
57 Correct 4 ms 12120 KB Output is correct
58 Correct 4 ms 12136 KB Output is correct
59 Correct 273 ms 30000 KB Output is correct
60 Correct 361 ms 32200 KB Output is correct
61 Correct 3 ms 12124 KB Output is correct
62 Correct 3 ms 12196 KB Output is correct
63 Correct 233 ms 28732 KB Output is correct
64 Correct 4 ms 12380 KB Output is correct
65 Correct 10 ms 13660 KB Output is correct
66 Correct 90 ms 25540 KB Output is correct
67 Correct 403 ms 40272 KB Output is correct
68 Correct 395 ms 41160 KB Output is correct
69 Correct 7 ms 12892 KB Output is correct
70 Correct 48 ms 19272 KB Output is correct
71 Correct 186 ms 35132 KB Output is correct
72 Correct 242 ms 34344 KB Output is correct
73 Correct 44 ms 17620 KB Output is correct
74 Correct 336 ms 30972 KB Output is correct
75 Correct 17 ms 14552 KB Output is correct
76 Correct 222 ms 34948 KB Output is correct
77 Correct 211 ms 35156 KB Output is correct
78 Correct 19 ms 14684 KB Output is correct
79 Correct 410 ms 38480 KB Output is correct
80 Correct 4 ms 12376 KB Output is correct
81 Correct 53 ms 19276 KB Output is correct
82 Correct 267 ms 33220 KB Output is correct
83 Correct 333 ms 31176 KB Output is correct
84 Correct 337 ms 31176 KB Output is correct
85 Correct 353 ms 31172 KB Output is correct
86 Correct 322 ms 32280 KB Output is correct
87 Correct 342 ms 32316 KB Output is correct