# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
---|---|---|---|---|---|---|---|
630415 | 2022-08-16T10:42:37 Z | MasterTaster | Network (BOI15_net) | C++14 | 587 ms | 43428 KB |
#include <bits/stdc++.h> #define pb push_back #define ll long long #define pii pair<int, int> #define xx first #define yy second #define MAXN 500010 using namespace std; int n; vector<int> g[MAXN], listovi; bool bio[MAXN]; void dfs(int u) { bio[u]=true; if (g[u].size()==1) listovi.pb(u); for (auto v:g[u]) if (!bio[v]) dfs(v); } int main(){ ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); cin>>n; if (n==1) { cout<<1<<endl<<1<<" "<<1; exit(0); } if (n==2) { cout<<1<<endl<<1<<" "<<2; exit(0); } for (int i=1; i<n; i++) { int u, v; cin>>u>>v; g[u].pb(v); g[v].pb(u); } for (int i=1; i<=n; i++) if (g[i].size()!=1) { dfs(i); break; } //for (int i=0; i<listovi.size(); i++) cout<<listovi[i]<<" "; cout<<(listovi.size()+1)/2<<endl; for (int i=0; i<listovi.size()/2; i++) { cout<<listovi[i]<<" "<<listovi[i+listovi.size()/2]<<endl; } if (listovi.size()%2) cout<<listovi[listovi.size()-2]<<" "<<listovi[listovi.size()-1]; }
Compilation message
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 7 ms | 11988 KB | Output is correct |
2 | Correct | 6 ms | 12064 KB | Output is correct |
3 | Correct | 7 ms | 12064 KB | Output is correct |
4 | Correct | 6 ms | 12072 KB | Output is correct |
5 | Correct | 6 ms | 12072 KB | Output is correct |
6 | Correct | 6 ms | 12072 KB | Output is correct |
7 | Correct | 6 ms | 12072 KB | Output is correct |
8 | Correct | 6 ms | 11988 KB | Output is correct |
9 | Correct | 6 ms | 11988 KB | Output is correct |
10 | Correct | 6 ms | 11988 KB | Output is correct |
11 | Correct | 7 ms | 12072 KB | Output is correct |
12 | Correct | 6 ms | 12000 KB | Output is correct |
13 | Correct | 7 ms | 12068 KB | Output is correct |
14 | Correct | 6 ms | 12068 KB | Output is correct |
15 | Correct | 6 ms | 11988 KB | Output is correct |
16 | Correct | 7 ms | 12068 KB | Output is correct |
17 | Correct | 7 ms | 12072 KB | Output is correct |
18 | Correct | 8 ms | 12072 KB | Output is correct |
19 | Correct | 8 ms | 11988 KB | Output is correct |
20 | Correct | 7 ms | 12068 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 7 ms | 11988 KB | Output is correct |
2 | Correct | 6 ms | 12064 KB | Output is correct |
3 | Correct | 7 ms | 12064 KB | Output is correct |
4 | Correct | 6 ms | 12072 KB | Output is correct |
5 | Correct | 6 ms | 12072 KB | Output is correct |
6 | Correct | 6 ms | 12072 KB | Output is correct |
7 | Correct | 6 ms | 12072 KB | Output is correct |
8 | Correct | 6 ms | 11988 KB | Output is correct |
9 | Correct | 6 ms | 11988 KB | Output is correct |
10 | Correct | 6 ms | 11988 KB | Output is correct |
11 | Correct | 7 ms | 12072 KB | Output is correct |
12 | Correct | 6 ms | 12000 KB | Output is correct |
13 | Correct | 7 ms | 12068 KB | Output is correct |
14 | Correct | 6 ms | 12068 KB | Output is correct |
15 | Correct | 6 ms | 11988 KB | Output is correct |
16 | Correct | 7 ms | 12068 KB | Output is correct |
17 | Correct | 7 ms | 12072 KB | Output is correct |
18 | Correct | 8 ms | 12072 KB | Output is correct |
19 | Correct | 8 ms | 11988 KB | Output is correct |
20 | Correct | 7 ms | 12068 KB | Output is correct |
21 | Correct | 7 ms | 11984 KB | Output is correct |
22 | Correct | 8 ms | 12116 KB | Output is correct |
23 | Correct | 8 ms | 12108 KB | Output is correct |
24 | Correct | 8 ms | 12116 KB | Output is correct |
25 | Correct | 8 ms | 12116 KB | Output is correct |
26 | Correct | 7 ms | 12116 KB | Output is correct |
27 | Correct | 8 ms | 12136 KB | Output is correct |
28 | Correct | 9 ms | 12084 KB | Output is correct |
29 | Correct | 8 ms | 12116 KB | Output is correct |
30 | Correct | 8 ms | 11988 KB | Output is correct |
31 | Correct | 9 ms | 12076 KB | Output is correct |
32 | Correct | 8 ms | 12072 KB | Output is correct |
33 | Correct | 6 ms | 12072 KB | Output is correct |
34 | Correct | 8 ms | 12052 KB | Output is correct |
35 | Correct | 6 ms | 11988 KB | Output is correct |
36 | Correct | 8 ms | 12068 KB | Output is correct |
37 | Correct | 12 ms | 12080 KB | Output is correct |
38 | Correct | 7 ms | 12116 KB | Output is correct |
39 | Correct | 7 ms | 11988 KB | Output is correct |
40 | Correct | 7 ms | 12016 KB | Output is correct |
41 | Correct | 7 ms | 11988 KB | Output is correct |
42 | Correct | 9 ms | 12068 KB | Output is correct |
43 | Correct | 7 ms | 12116 KB | Output is correct |
44 | Correct | 7 ms | 12064 KB | Output is correct |
45 | Correct | 6 ms | 11988 KB | Output is correct |
46 | Correct | 8 ms | 11988 KB | Output is correct |
47 | Correct | 6 ms | 11988 KB | Output is correct |
48 | Correct | 7 ms | 12064 KB | Output is correct |
49 | Correct | 8 ms | 12076 KB | Output is correct |
50 | Correct | 7 ms | 11988 KB | Output is correct |
51 | Correct | 7 ms | 11976 KB | Output is correct |
52 | Correct | 7 ms | 12076 KB | Output is correct |
53 | Correct | 7 ms | 12048 KB | Output is correct |
54 | Correct | 7 ms | 11988 KB | Output is correct |
55 | Correct | 7 ms | 11988 KB | Output is correct |
56 | Correct | 6 ms | 11988 KB | Output is correct |
57 | Correct | 7 ms | 12064 KB | Output is correct |
58 | Correct | 9 ms | 12176 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 7 ms | 11988 KB | Output is correct |
2 | Correct | 6 ms | 12064 KB | Output is correct |
3 | Correct | 7 ms | 12064 KB | Output is correct |
4 | Correct | 6 ms | 12072 KB | Output is correct |
5 | Correct | 6 ms | 12072 KB | Output is correct |
6 | Correct | 6 ms | 12072 KB | Output is correct |
7 | Correct | 6 ms | 12072 KB | Output is correct |
8 | Correct | 6 ms | 11988 KB | Output is correct |
9 | Correct | 6 ms | 11988 KB | Output is correct |
10 | Correct | 6 ms | 11988 KB | Output is correct |
11 | Correct | 7 ms | 12072 KB | Output is correct |
12 | Correct | 6 ms | 12000 KB | Output is correct |
13 | Correct | 7 ms | 12068 KB | Output is correct |
14 | Correct | 6 ms | 12068 KB | Output is correct |
15 | Correct | 6 ms | 11988 KB | Output is correct |
16 | Correct | 7 ms | 12068 KB | Output is correct |
17 | Correct | 7 ms | 12072 KB | Output is correct |
18 | Correct | 8 ms | 12072 KB | Output is correct |
19 | Correct | 8 ms | 11988 KB | Output is correct |
20 | Correct | 7 ms | 12068 KB | Output is correct |
21 | Correct | 7 ms | 11984 KB | Output is correct |
22 | Correct | 8 ms | 12116 KB | Output is correct |
23 | Correct | 8 ms | 12108 KB | Output is correct |
24 | Correct | 8 ms | 12116 KB | Output is correct |
25 | Correct | 8 ms | 12116 KB | Output is correct |
26 | Correct | 7 ms | 12116 KB | Output is correct |
27 | Correct | 8 ms | 12136 KB | Output is correct |
28 | Correct | 9 ms | 12084 KB | Output is correct |
29 | Correct | 8 ms | 12116 KB | Output is correct |
30 | Correct | 8 ms | 11988 KB | Output is correct |
31 | Correct | 9 ms | 12076 KB | Output is correct |
32 | Correct | 8 ms | 12072 KB | Output is correct |
33 | Correct | 6 ms | 12072 KB | Output is correct |
34 | Correct | 8 ms | 12052 KB | Output is correct |
35 | Correct | 6 ms | 11988 KB | Output is correct |
36 | Correct | 8 ms | 12068 KB | Output is correct |
37 | Correct | 12 ms | 12080 KB | Output is correct |
38 | Correct | 7 ms | 12116 KB | Output is correct |
39 | Correct | 7 ms | 11988 KB | Output is correct |
40 | Correct | 7 ms | 12016 KB | Output is correct |
41 | Correct | 7 ms | 11988 KB | Output is correct |
42 | Correct | 9 ms | 12068 KB | Output is correct |
43 | Correct | 7 ms | 12116 KB | Output is correct |
44 | Correct | 7 ms | 12064 KB | Output is correct |
45 | Correct | 6 ms | 11988 KB | Output is correct |
46 | Correct | 8 ms | 11988 KB | Output is correct |
47 | Correct | 6 ms | 11988 KB | Output is correct |
48 | Correct | 7 ms | 12064 KB | Output is correct |
49 | Correct | 8 ms | 12076 KB | Output is correct |
50 | Correct | 7 ms | 11988 KB | Output is correct |
51 | Correct | 7 ms | 11976 KB | Output is correct |
52 | Correct | 7 ms | 12076 KB | Output is correct |
53 | Correct | 7 ms | 12048 KB | Output is correct |
54 | Correct | 7 ms | 11988 KB | Output is correct |
55 | Correct | 7 ms | 11988 KB | Output is correct |
56 | Correct | 6 ms | 11988 KB | Output is correct |
57 | Correct | 7 ms | 12064 KB | Output is correct |
58 | Correct | 9 ms | 12176 KB | Output is correct |
59 | Correct | 503 ms | 32232 KB | Output is correct |
60 | Correct | 577 ms | 34528 KB | Output is correct |
61 | Correct | 7 ms | 11988 KB | Output is correct |
62 | Correct | 6 ms | 12064 KB | Output is correct |
63 | Correct | 458 ms | 30416 KB | Output is correct |
64 | Correct | 8 ms | 12500 KB | Output is correct |
65 | Correct | 20 ms | 13964 KB | Output is correct |
66 | Correct | 138 ms | 27380 KB | Output is correct |
67 | Correct | 431 ms | 42584 KB | Output is correct |
68 | Correct | 471 ms | 43428 KB | Output is correct |
69 | Correct | 21 ms | 12844 KB | Output is correct |
70 | Correct | 150 ms | 20792 KB | Output is correct |
71 | Correct | 576 ms | 37400 KB | Output is correct |
72 | Correct | 534 ms | 36640 KB | Output is correct |
73 | Correct | 116 ms | 18988 KB | Output is correct |
74 | Correct | 531 ms | 33336 KB | Output is correct |
75 | Correct | 53 ms | 15324 KB | Output is correct |
76 | Correct | 531 ms | 37072 KB | Output is correct |
77 | Correct | 587 ms | 37332 KB | Output is correct |
78 | Correct | 42 ms | 15520 KB | Output is correct |
79 | Correct | 446 ms | 40844 KB | Output is correct |
80 | Correct | 9 ms | 12244 KB | Output is correct |
81 | Correct | 156 ms | 20764 KB | Output is correct |
82 | Correct | 567 ms | 35212 KB | Output is correct |
83 | Correct | 519 ms | 33168 KB | Output is correct |
84 | Correct | 572 ms | 33268 KB | Output is correct |
85 | Correct | 520 ms | 33208 KB | Output is correct |
86 | Correct | 557 ms | 34380 KB | Output is correct |
87 | Correct | 568 ms | 34352 KB | Output is correct |