View Code of Problem 133

#include <iostream>
using namespace std;

int main(){
  int T,n,x;
  bool flag;
  cin>>T;
  while(T--){
    scanf("%d%d",&n,&x);
    int s[n];
    for(int k=0;k<n;k++)
      scanf("%d",&s[k]);
    flag = false;
    for(int k=0;k<n;k++)
      for(int l=k+1;l<n;l++)
        if(k+l==x){
          flag = true;
          break;
        }
    if(flag)
      printf("YES\n");
    else
      printf("NO\n");
  }
  return 0;
}