#include using namespace std; int n, m; int a[1010][1010]; int main(void) { cin >> n >> m; for (int i = 0; i < m; i++) { for (int j = 0; j < n; j++) { cin >> a[i][j]; } } bool yes = false; for (int i = 0; i < m; i++) { if (i) { for (int j = 0; j < n; j++) { a[i][j] += a[i - 1][j]; } } int l = 0, r = 0, sum = 0; while (l < n) { while (r < n && sum < 777) { sum += a[i][r++]; } yes |= (sum == 777); sum -= a[i][l++]; } } cout << (yes ? "YES" : "NO") << endl; return 0; }