#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define ull unsigned long long
#define ld long double
 
void Free_palestine() {
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
 
const int N = 2e5 + 5;
const int MOD = 1e9 + 7;
const int MAXN = 1e5 + 5;
 
 
signed main(){
  Free_palestine();
  int n,m; cin>>n>>m;
  int arr[n][m];
 
   for(int i = 0; i < n; i++){
    for(int j = 0; j < n; j++){
    	cin>>arr[i][j];
    }
   }
  int x; cin>>x;
 
  for(int i = 0; i < n; i++){
    for(int j = 0; j < n; j++){
    	if (arr[i][j] == x) {
                cout<<"YES"<<endl;
                return 0; 
            }
        }
    }
  cout<<"NO"<<endl;
}

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MiAyCjEgMgozIDQKMTA=

2 2
1 2
3 4
10