#define _CRT_SECURE_NO_WARNINGS #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define rep(i,p,n) for(int i=(int)p;i<(int)n;i++) #define repp(i,p,n) for(int i=(int)p;i>=(int)n;i--) #define Sort(x) sort(x.begin(),x.end()); #define ll long long #define INF 2000000000 using namespace std; int main() { int n, m; cin >> n >> m; vector v(n, 0); rep(i, 0, m) { rep(j, 0, n) { int x; cin >> x; v[j] += x; } int left = 0, right = 0,sum=v[0]; while (1) { if (sum < 777) { right++; if (right == n)break; sum += v[right]; } else if(sum>777){ sum -= v[left]; left++; if (left == n)break; } else if(sum==777){ cout << "YES" << endl; goto AWAY; } } } cout << "NO" << endl; AWAY:; return 0; }