#include #define rep(i,a,b) for(int i=int(a);i> N >> M; vector V(N); rep(i,0,M){ rep(j,0,N){ int a; cin >> a; V[j] += a; } //しゃくとり int sum = 0; for(int l = 0,r = 0;r < N;r++){ sum += V[r]; while(sum > 777 && l < r){ sum -= V[l]; l++; } if(sum == 777){ cout << "YES" << endl; return 0; } } } cout << "NO" << endl; }