#include using namespace std; using ll = long long; using ul = unsigned long; using ull = unsigned long long; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int n, m; cin >> n >> m; vector > v(m, vector(n)); for (auto&& it : v) for (auto&& it2 : it) cin >> it2; for (int i = 0; i < m; ++i) { if (i > 0) { for (int j = 0; j < n; ++j) v[i][j] += v[i - 1][j]; } for (int left = 0; left < n; ++left) { ll sum = 0; int right = left; while (right < n && sum + v[i][right] <= 777) sum += v[i][right++]; if (sum == 777) { cout << "YES\n"; return 0; } } } cout << "NO\n"; return 0; }