#include<bits/stdc++.h>
using namespace std;

//constant
const long long int inf = 1<<30;
const int N = 1e3+1;
const int M = 1e3+1;

//variable
int n,m;
int a[N][N];

//function


int main()
{
    cin >> n >> m;
    int in1, in2;
    for(int i = 1; i < m+1; i++){
        in2 = 0;
        for(int j = 0; j < n; j++){
            cin >> in1;
            in2 += in1;
            a[i][j] = a[i-1][j] + in2;
        }
    }

    for(int i = 1; i < m+1; i++){
        if(a[i][0] == 777 || a[i][n-1] == 777){
            cout << "YES" <<endl;
            return 0;
        }
        for(int j = 0; j < n - 1; j++){
            for(int ii = j+1; ii < n; ii++){
                //cout << a[i][ii] - a[i][j] << endl;
                if(a[i][ii] - a[i][j] == 777){
                    cout << "YES" <<endl;
                    return 0;
                }
                else if(a[i][ii] - a[i][j] > 777){
                    continue;
                }
            }
        }
    }
    /*for(int i = 1; i < m + 1; i++){
        for(int j = 0; j < n; j++){
            printf("%3d ", a[i][j]);
        }
        cout << endl;
    }*/

    cout << "NO" << endl;

    return 0;
}