Submission #1758195

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,a,b,k;
  cin >> n >> a >> b >> k;
  int p[110];
  for(int i=0;i<k;i++){
    cin >> p[i];
  }
  for(int i=0;i<k;i++){
    for(int j=0;j<k;j++){
      if(p[i]==p[j] && i!=j){
        cout << "NO" << endl;
        return 0;
      }else if(p[i]==a || p[i]==b){
        cout << "NO" << endl;
        return 0;
      }
    }
  }
  cout << "YES" << endl;
  return 0;
}

Submission Info

Judge Result