#include using namespace std; int main(){ int N,M; cin >> N >> M; int a[M][N]; for(int i=0;i> a[i][j]; if(i>=1){ a[i][j]+=a[i-1][j]; } } } for(int i=0;i777) break; sum+=a[i][right++]; } sum-=a[i][left]; } } cout << "NO" << endl; }