#include using namespace std; int main() { int N, M, S[1000] = {}; cin >> N >> M; for(int i = 0; i < M; i++) { for(int j = 0; j < N; j++) { int a; cin >> a; S[j] += a; } set< int > pv{0}; int sum = 0; for(int j = 0; j < N; j++) { sum += S[j]; pv.emplace(sum); if(pv.count(sum - 777)) { cout << "YES" << endl; return (0); } } } cout << "NO" << endl; }