#include <iostream>
#include <vector>
#include <bits/stdc++.h>
#define FOR(i, a, n) for(int i = (int)(a); i < (int)(n); ++i)
#define REP(i, n) FOR(i, 0, n)
using namespace std;
int main(){
    // Your code here

    int N,M;
    cin >> N>>M;

    int A[1000][1000];
    REP(i,M)REP(j,N) cin >>A[i][j];
    FOR(i,1,M)FOR(j,0,N) A[i][j]+=A[i-1][j];
    FOR(i,0,M)FOR(j,1,N) A[i][j]+=A[i][j-1];

    REP(i,M){
        REP(j,N){
            if(A[i][j]==777){
                cout <<"YES"<<endl;
                return 0;
            }else if(A[i][j]<777){
                continue;
            }else{
                REP(k,N){
                    int b = A[i][j]-A[i][k];
                    if (b==777){
                        cout <<"YES"<<endl;
                        return 0;
                    }
                }
            }

            
        }

    }
    cout << "NO"<<endl;
}