using System; using System.Collections; using System.Collections.Generic; using System.Collections.Specialized; using System.Text; using System.Text.RegularExpressions; using System.Linq; using System.IO; using System.Diagnostics; class Scanner { private readonly char Separator = ' '; private int Index = 0; private string[] Line = new string[0]; public string Next() { if (Index >= Line.Length) { Line = Console.ReadLine().Split(Separator); Index = 0; } var ret = Line[Index]; Index++; return ret; } public int NextInt() { return int.Parse(Next()); } private long NextLong() { return long.Parse(Next()); } } class Program { private int N, M; private long[,] A; private long[] Train; private void Scan() { var line = Console.ReadLine().Split(' '); N = int.Parse(line[0]); M = int.Parse(line[1]); A = new long[M, N]; for (int i = 0; i < M; i++) { line = Console.ReadLine().Split(' '); for (int j = 0; j < N; j++) { A[i, j] = long.Parse(line[j]); } } } public void Solve() { Scan(); Train = new long[N]; for (int i = 0; i < M; i++) { for (int j = 0; j < N; j++) { Train[j] += A[i, j]; } if (C()) { Console.WriteLine("YES"); return; } } Console.WriteLine("NO"); } private bool C() { long sum = 0; int l = 0; for (int r = 0; r < N; r++) { sum += Train[r]; while(sum>777) { sum -= Train[l]; l++; } if(sum==777) { return true; } } return false; } static public void Main() { new Program().Solve(); } }