#include <bits/stdc++.h>
using namespace std;
#define int long long
int32_t main(){
ios_base::sync_with_stdio(false); cin.tie(0);
int n, m; cin >> n >> m;
vector<vector<int>> g(n);
vector<int> d(n), val(n);
for(int i=0; i<m; i++){
int x, y; cin >> x >> y;
x--; y--;
g[x].push_back(y);
g[y].push_back(x);
}
int flag = 1;
auto dfs=[&](int v, int p, auto&&dfs)->int{
if(v==p) d[v]=0;
else d[v]=d[p]+1;
val[v] = d[v];
vector<int> a;
for(auto i: g[v]){
if(i!=p) a.push_back(dfs(i, v, dfs));
}
sort(a.begin(), a.end());
sort(g[v].begin(), g[v].end(), [&](int x, int y){
return val[x]<val[y];
});
if(a.size())
val[v]=max(val[v], a.back());
if(v==p){
if(a.size()>2 && a[a.size()-3] >2) flag =0;
}
return val[v];
};
if(n==m+1)
for(int i=0; i<n; i++) dfs(i, i, dfs);
else flag =0;
if(flag){
cout<<"YES\n";
if(n==1) cout<<1<<" "<<1<<"\n";
else if(n==2) cout<<"2 2 2"<<"\n";
else{
vector a(n, vector(n, vector<int>()));
vector vis(n, vector(n, 0));
auto dfs2=[&](int v, int p, auto&&dfs2)->vector<int>{
vector<int> s;
if(vis[v][p]) return a[v][p];
vis[v][p]=1;
// cout<<v<<" "<<d[v]<<" "<<val[v]<<"\n";
if(d[v]==val[v]) return a[v][p]=s;
else if(d[v]==val[v]-1){
s.push_back(v);
return a[v][p]=s;
}
else{
vector<int> b;
vector<vector<int>> c;
for(auto i: g[v]){
if(i==p) continue;
c.push_back(dfs2(i, v, dfs2));
}
if(!c.back().size()){
return b;
}
/* cout<<v+1<<"\n";
for(auto i: c){
for(auto l: i) cout<<l+1<<" ";
cout<<"\n";
}*/
for(auto i: c.back()) b.push_back(i);
b.push_back(v);
for(int i=0; i<c.size()-1; i++){
if(!c[i].size()){
continue;
}
for(auto j: c[i]){
b.push_back(j);
}
b.push_back(v);
}
return a[v][p]=b;
}
};
vector<int> x;
for(int i=0; i<n; i++){
dfs(i, i, dfs);
auto s = dfs2(i, i, dfs2);
if(!x.size()) x = s;
else if(s.size()<x.size()) x = s;
}
// reverse(x.begin(), x.end());
for(int i=x.size()-1; i>=0; i--){
x.push_back(x[i]);
}
cout<<x.size()<<"\n";
for(auto i: x) cout<<i+1<<" ";
cout<<"\n";
}
}
else cout<<"NO\n";
}
Compilation message
newspapers.cpp: In lambda function:
newspapers.cpp:95:35: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
95 | for(int i=0; i<c.size()-1; i++){
| ~^~~~~~~~~~~
newspapers.cpp: In instantiation of 'main()::<lambda(long long int, long long int, auto:24&&)> [with auto:24 = main()::<lambda(long long int, long long int, auto:24&&)>&]':
newspapers.cpp:116:41: required from here
newspapers.cpp:95:35: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
708 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
1 ms |
344 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Correct |
1 ms |
600 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
1 ms |
348 KB |
Output is correct |
| 23 |
Correct |
0 ms |
348 KB |
Output is correct |
| 24 |
Correct |
1 ms |
344 KB |
Output is correct |
| 25 |
Correct |
0 ms |
344 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
348 KB |
Output is correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Correct |
0 ms |
348 KB |
Output is correct |
| 30 |
Correct |
0 ms |
348 KB |
Output is correct |
| 31 |
Correct |
0 ms |
344 KB |
Output is correct |
| 32 |
Correct |
0 ms |
344 KB |
Output is correct |
| 33 |
Partially correct |
1 ms |
348 KB |
Failed to provide a successful strategy. |
| 34 |
Correct |
0 ms |
344 KB |
Output is correct |
| 35 |
Correct |
1 ms |
348 KB |
Output is correct |
| 36 |
Correct |
0 ms |
348 KB |
Output is correct |
| 37 |
Correct |
1 ms |
348 KB |
Output is correct |
| 38 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
| 39 |
Partially correct |
1 ms |
456 KB |
Failed to provide a successful strategy. |
| 40 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
| 41 |
Partially correct |
1 ms |
348 KB |
Failed to provide a successful strategy. |
| 42 |
Correct |
1 ms |
348 KB |
Output is correct |
| 43 |
Correct |
1 ms |
348 KB |
Output is correct |
| 44 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
| 45 |
Correct |
1 ms |
348 KB |
Output is correct |
| 46 |
Correct |
1 ms |
344 KB |
Output is correct |
| 47 |
Correct |
1 ms |
344 KB |
Output is correct |
| 48 |
Correct |
0 ms |
348 KB |
Output is correct |
| 49 |
Correct |
0 ms |
460 KB |
Output is correct |
| 50 |
Correct |
1 ms |
348 KB |
Output is correct |
| 51 |
Correct |
0 ms |
348 KB |
Output is correct |
| 52 |
Correct |
0 ms |
348 KB |
Output is correct |
| 53 |
Correct |
0 ms |
348 KB |
Output is correct |
| 54 |
Partially correct |
1 ms |
348 KB |
Failed to provide a successful strategy. |
| 55 |
Correct |
0 ms |
348 KB |
Output is correct |
| 56 |
Correct |
1 ms |
344 KB |
Output is correct |
| 57 |
Correct |
1 ms |
348 KB |
Output is correct |
| 58 |
Correct |
0 ms |
348 KB |
Output is correct |
| 59 |
Correct |
0 ms |
348 KB |
Output is correct |
| 60 |
Correct |
0 ms |
348 KB |
Output is correct |
| 61 |
Correct |
1 ms |
348 KB |
Output is correct |
| 62 |
Correct |
0 ms |
344 KB |
Output is correct |
| 63 |
Correct |
0 ms |
348 KB |
Output is correct |
| 64 |
Correct |
0 ms |
348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
460 KB |
Output is correct |
| 8 |
Correct |
1 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
91 ms |
42384 KB |
Output is correct |
| 12 |
Correct |
27 ms |
12512 KB |
Output is correct |
| 13 |
Correct |
37 ms |
17492 KB |
Output is correct |
| 14 |
Correct |
48 ms |
19288 KB |
Output is correct |
| 15 |
Correct |
46 ms |
21844 KB |
Output is correct |
| 16 |
Correct |
98 ms |
46932 KB |
Output is correct |
| 17 |
Correct |
97 ms |
47180 KB |
Output is correct |
| 18 |
Correct |
100 ms |
47372 KB |
Output is correct |
| 19 |
Correct |
99 ms |
47220 KB |
Output is correct |
| 20 |
Correct |
104 ms |
47376 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
708 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
1 ms |
344 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Correct |
1 ms |
600 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
1 ms |
348 KB |
Output is correct |
| 23 |
Correct |
0 ms |
348 KB |
Output is correct |
| 24 |
Correct |
1 ms |
344 KB |
Output is correct |
| 25 |
Correct |
0 ms |
344 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
348 KB |
Output is correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Correct |
0 ms |
348 KB |
Output is correct |
| 30 |
Correct |
0 ms |
348 KB |
Output is correct |
| 31 |
Correct |
0 ms |
344 KB |
Output is correct |
| 32 |
Correct |
0 ms |
344 KB |
Output is correct |
| 33 |
Partially correct |
1 ms |
348 KB |
Failed to provide a successful strategy. |
| 34 |
Correct |
0 ms |
344 KB |
Output is correct |
| 35 |
Correct |
1 ms |
348 KB |
Output is correct |
| 36 |
Correct |
0 ms |
348 KB |
Output is correct |
| 37 |
Correct |
1 ms |
348 KB |
Output is correct |
| 38 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
| 39 |
Partially correct |
1 ms |
456 KB |
Failed to provide a successful strategy. |
| 40 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
| 41 |
Partially correct |
1 ms |
348 KB |
Failed to provide a successful strategy. |
| 42 |
Correct |
1 ms |
348 KB |
Output is correct |
| 43 |
Correct |
1 ms |
348 KB |
Output is correct |
| 44 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
| 45 |
Correct |
1 ms |
348 KB |
Output is correct |
| 46 |
Correct |
1 ms |
344 KB |
Output is correct |
| 47 |
Correct |
1 ms |
344 KB |
Output is correct |
| 48 |
Correct |
0 ms |
348 KB |
Output is correct |
| 49 |
Correct |
0 ms |
460 KB |
Output is correct |
| 50 |
Correct |
1 ms |
348 KB |
Output is correct |
| 51 |
Correct |
0 ms |
348 KB |
Output is correct |
| 52 |
Correct |
0 ms |
348 KB |
Output is correct |
| 53 |
Correct |
0 ms |
348 KB |
Output is correct |
| 54 |
Partially correct |
1 ms |
348 KB |
Failed to provide a successful strategy. |
| 55 |
Correct |
0 ms |
348 KB |
Output is correct |
| 56 |
Correct |
1 ms |
344 KB |
Output is correct |
| 57 |
Correct |
1 ms |
348 KB |
Output is correct |
| 58 |
Correct |
0 ms |
348 KB |
Output is correct |
| 59 |
Correct |
0 ms |
348 KB |
Output is correct |
| 60 |
Correct |
0 ms |
348 KB |
Output is correct |
| 61 |
Correct |
1 ms |
348 KB |
Output is correct |
| 62 |
Correct |
0 ms |
344 KB |
Output is correct |
| 63 |
Correct |
0 ms |
348 KB |
Output is correct |
| 64 |
Correct |
0 ms |
348 KB |
Output is correct |
| 65 |
Correct |
0 ms |
344 KB |
Output is correct |
| 66 |
Correct |
0 ms |
348 KB |
Output is correct |
| 67 |
Correct |
1 ms |
352 KB |
Output is correct |
| 68 |
Correct |
1 ms |
348 KB |
Output is correct |
| 69 |
Correct |
1 ms |
348 KB |
Output is correct |
| 70 |
Correct |
0 ms |
348 KB |
Output is correct |
| 71 |
Correct |
0 ms |
344 KB |
Output is correct |
| 72 |
Correct |
1 ms |
348 KB |
Output is correct |
| 73 |
Correct |
1 ms |
348 KB |
Output is correct |
| 74 |
Correct |
0 ms |
348 KB |
Output is correct |
| 75 |
Correct |
0 ms |
348 KB |
Output is correct |
| 76 |
Correct |
0 ms |
348 KB |
Output is correct |
| 77 |
Correct |
0 ms |
456 KB |
Output is correct |
| 78 |
Correct |
0 ms |
348 KB |
Output is correct |
| 79 |
Correct |
29 ms |
532 KB |
Output is correct |
| 80 |
Correct |
30 ms |
524 KB |
Output is correct |
| 81 |
Correct |
38 ms |
348 KB |
Output is correct |
| 82 |
Correct |
36 ms |
348 KB |
Output is correct |
| 83 |
Correct |
34 ms |
348 KB |
Output is correct |
| 84 |
Correct |
30 ms |
344 KB |
Output is correct |
| 85 |
Correct |
31 ms |
348 KB |
Output is correct |
| 86 |
Correct |
31 ms |
536 KB |
Output is correct |
| 87 |
Correct |
33 ms |
344 KB |
Output is correct |
| 88 |
Correct |
27 ms |
520 KB |
Output is correct |
| 89 |
Correct |
117 ms |
40212 KB |
Output is correct |
| 90 |
Partially correct |
90 ms |
31316 KB |
Failed to provide a successful strategy. |
| 91 |
Correct |
83 ms |
29520 KB |
Output is correct |
| 92 |
Correct |
73 ms |
25172 KB |
Output is correct |
| 93 |
Partially correct |
114 ms |
39240 KB |
Failed to provide a successful strategy. |
| 94 |
Partially correct |
79 ms |
27476 KB |
Failed to provide a successful strategy. |
| 95 |
Partially correct |
118 ms |
42076 KB |
Failed to provide a successful strategy. |
| 96 |
Partially correct |
116 ms |
40524 KB |
Failed to provide a successful strategy. |
| 97 |
Partially correct |
69 ms |
24144 KB |
Failed to provide a successful strategy. |
| 98 |
Partially correct |
113 ms |
39244 KB |
Failed to provide a successful strategy. |
| 99 |
Partially correct |
84 ms |
30032 KB |
Failed to provide a successful strategy. |
| 100 |
Partially correct |
98 ms |
32060 KB |
Failed to provide a successful strategy. |
| 101 |
Correct |
84 ms |
29264 KB |
Output is correct |
| 102 |
Partially correct |
83 ms |
30148 KB |
Failed to provide a successful strategy. |
| 103 |
Partially correct |
95 ms |
32532 KB |
Failed to provide a successful strategy. |
| 104 |
Partially correct |
68 ms |
23636 KB |
Failed to provide a successful strategy. |
| 105 |
Correct |
74 ms |
26448 KB |
Output is correct |
| 106 |
Correct |
113 ms |
34896 KB |
Output is correct |
| 107 |
Partially correct |
87 ms |
27220 KB |
Failed to provide a successful strategy. |
| 108 |
Correct |
119 ms |
40032 KB |
Output is correct |
| 109 |
Correct |
93 ms |
31824 KB |
Output is correct |
| 110 |
Partially correct |
108 ms |
31576 KB |
Failed to provide a successful strategy. |
| 111 |
Correct |
76 ms |
26448 KB |
Output is correct |
| 112 |
Partially correct |
79 ms |
27984 KB |
Failed to provide a successful strategy. |
| 113 |
Partially correct |
116 ms |
40964 KB |
Failed to provide a successful strategy. |
| 114 |
Partially correct |
97 ms |
34640 KB |
Failed to provide a successful strategy. |
| 115 |
Correct |
83 ms |
28496 KB |
Output is correct |
| 116 |
Correct |
95 ms |
33108 KB |
Output is correct |
| 117 |
Correct |
116 ms |
42044 KB |
Output is correct |
| 118 |
Partially correct |
99 ms |
34628 KB |
Failed to provide a successful strategy. |
| 119 |
Correct |
89 ms |
30060 KB |
Output is correct |
| 120 |
Partially correct |
104 ms |
36432 KB |
Failed to provide a successful strategy. |
| 121 |
Correct |
104 ms |
36436 KB |
Output is correct |
| 122 |
Correct |
83 ms |
28732 KB |
Output is correct |
| 123 |
Partially correct |
78 ms |
26448 KB |
Failed to provide a successful strategy. |
| 124 |
Partially correct |
115 ms |
39764 KB |
Failed to provide a successful strategy. |
| 125 |
Correct |
69 ms |
23968 KB |
Output is correct |
| 126 |
Partially correct |
75 ms |
26332 KB |
Failed to provide a successful strategy. |
| 127 |
Partially correct |
75 ms |
25184 KB |
Failed to provide a successful strategy. |
| 128 |
Partially correct |
111 ms |
39508 KB |
Failed to provide a successful strategy. |
| 129 |
Correct |
43 ms |
348 KB |
Output is correct |
| 130 |
Correct |
42 ms |
520 KB |
Output is correct |
| 131 |
Correct |
42 ms |
348 KB |
Output is correct |
| 132 |
Correct |
41 ms |
512 KB |
Output is correct |
| 133 |
Correct |
47 ms |
596 KB |
Output is correct |
| 134 |
Correct |
11 ms |
2908 KB |
Output is correct |
| 135 |
Correct |
9 ms |
3160 KB |
Output is correct |
| 136 |
Correct |
25 ms |
9052 KB |
Output is correct |
| 137 |
Correct |
16 ms |
5212 KB |
Output is correct |
| 138 |
Correct |
26 ms |
7248 KB |
Output is correct |
| 139 |
Correct |
50 ms |
12024 KB |
Output is correct |
| 140 |
Correct |
7 ms |
2136 KB |
Output is correct |
| 141 |
Correct |
3 ms |
1112 KB |
Output is correct |
| 142 |
Correct |
45 ms |
12292 KB |
Output is correct |
| 143 |
Correct |
54 ms |
12328 KB |
Output is correct |
| 144 |
Correct |
101 ms |
47300 KB |
Output is correct |
| 145 |
Correct |
99 ms |
47512 KB |
Output is correct |
