#include #include #include using namespace std; int main(){ int N, M; cin >> N >> M; int vehicles[N]; fill(vehicles, vehicles + N, 0); for(int i = 0; i < M; i++){ for(int j = 0; j < N; j++){ int plus; cin >> plus; vehicles[j] += plus; } int left = 0; int right = 0; int sum = 0; while(true){ if(sum > 777){ sum -= vehicles[left]; left++; }else if(sum < 777 && right < N){ sum += vehicles[right]; right++; }else{ break; } if(sum == 777){ cout << "YES" << endl; return 0; } } } cout << "NO" << endl; }