QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #235771 | #5307. Subgraph Isomorphism | ushg8877# | WA | 58ms | 3816kb | C++20 | 498b | 2023-11-03 08:58:14 | 2023-11-03 08:58:14 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define MP make_pair
mt19937 rnd(time(0));
const int MAXN=1e5+5;
int n,m,a[MAXN];
void solve(){
cin>>n>>m;
for(int i=1;i<=n;i++) a[i]=0;
for(int i=1,u,v;i<=m;i++){
cin>>u>>v;
a[u]++,a[v]++;
}
if(m==n-1){cout<<"YES"<<endl;return;}
for(int i=1;i<=n;i++) if(a[i]>2){cout<<"NO"<<endl;return;}
cout<<"YES"<<endl;return;
}
int main(){
ios::sync_with_stdio(false);
int _;cin>>_;
while(_--) solve();
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3816kb
input:
4 7 6 1 2 2 3 3 4 4 5 5 6 3 7 3 3 1 2 2 3 3 1 5 5 1 2 2 3 3 4 4 1 1 5 1 0
output:
YES YES NO YES
result:
ok 4 token(s): yes count is 3, no count is 1
Test #2:
score: -100
Wrong Answer
time: 58ms
memory: 3692kb
input:
33192 2 1 1 2 3 2 1 3 2 3 3 3 1 2 1 3 2 3 4 3 1 4 2 4 3 4 4 3 1 3 1 4 2 4 4 4 1 3 1 4 2 4 3 4 4 4 1 3 1 4 2 3 2 4 4 5 1 3 1 4 2 3 2 4 3 4 4 6 1 2 1 3 1 4 2 3 2 4 3 4 5 4 1 5 2 5 3 5 4 5 5 4 1 4 1 5 2 5 3 5 5 5 1 4 1 5 2 5 3 5 4 5 5 5 1 4 1 5 2 4 3 5 4 5 5 5 1 4 1 5 2 4 2 5 3 5 5 6 1 4 1 5 2 4 2 5 3 ...
output:
YES YES YES YES YES NO YES NO NO YES YES NO NO NO NO NO NO YES NO NO NO NO YES NO NO NO NO NO NO NO YES YES NO YES YES NO NO NO NO NO NO NO NO NO YES NO NO NO YES NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO YES NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO N...
result:
wrong answer expected YES, found NO [39th token]