Submission #7903388


Source Code Expand

#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;
const int INF = 1000000007;
using P=pair<int,int>;
vector<int> d(200005,0);
signed main(){
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  int n,m,k,l,sum=0;
  cin>>n>>m;
  queue<int> q;
  d[0]=1;
  q.push(0);
  vector<int> L[n+m];//人間は0~n-1,言語はn~n+l-1
  for(int i=0;i<n;i++){
    cin>>k;
    for(int j=0;j<k;j++){
      cin>>l;
      L[i].emplace_back(l+n-1);
      L[l+n-1].emplace_back(i);
    }
  }
  while(q.size()){
        int t=q.front();q.pop();
        for(auto y:L[t]){
            if(d[y]==0){d[y]=1;q.push(y);}
            else{continue;}
        }
    }
  for(int i=0;i<n;i++){
    sum+=d[i];
  }
  if(sum!=n){cout<<"NO";return 0;}
  cout<<"YES";
}

Submission Info

Submission Time
Task C - Interpretation
User zono819
Language C++14 (GCC 5.4.1)
Score 400
Code Size 791 Byte
Status AC
Exec Time 31 ms
Memory 9720 KB

Judge Result

Set Name sample dataset1 dataset2
Score / Max Score 0 / 0 200 / 200 200 / 200
Status
AC × 2
AC × 12
AC × 27
Set Name Test Cases
sample sample-01.txt, sample-02.txt
dataset1 sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt
dataset2 sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 02-01.txt, 02-02.txt, 02-03.txt, 02-04.txt, 02-05.txt, 02-06.txt, 02-07.txt, 02-08.txt, 02-09.txt, 02-10.txt, 02-11.txt, 02-12.txt, 02-13.txt, sample-01.txt, sample-02.txt
Case Name Status Exec Time Memory
01-01.txt AC 2 ms 1024 KB
01-02.txt AC 2 ms 1152 KB
01-03.txt AC 2 ms 1152 KB
01-04.txt AC 2 ms 1152 KB
01-05.txt AC 2 ms 1152 KB
01-06.txt AC 2 ms 1152 KB
01-07.txt AC 2 ms 1152 KB
01-08.txt AC 2 ms 1152 KB
01-09.txt AC 2 ms 1152 KB
01-10.txt AC 2 ms 1152 KB
02-01.txt AC 25 ms 6272 KB
02-02.txt AC 25 ms 7168 KB
02-03.txt AC 25 ms 4608 KB
02-04.txt AC 31 ms 7808 KB
02-05.txt AC 29 ms 6528 KB
02-06.txt AC 30 ms 7808 KB
02-07.txt AC 27 ms 6912 KB
02-08.txt AC 20 ms 7160 KB
02-09.txt AC 23 ms 9720 KB
02-10.txt AC 20 ms 7288 KB
02-11.txt AC 20 ms 7160 KB
02-12.txt AC 22 ms 6912 KB
02-13.txt AC 22 ms 6912 KB
sample-01.txt AC 2 ms 1024 KB
sample-02.txt AC 2 ms 1024 KB