largest1

import java.util.Scanner;
   
public class largest1{  

  public static void main (String[] args)
  {
    Scanner input = new Scanner (System.in);

    int params = input.nextInt();
    int params1 = input.nextInt();
    int[][] nums = new int[params][params1];
    for (int i =0;i<nums.length;i++)
    {
      for (int j =0;j<nums[i].length;j++)
      {
        nums[i][j] = input.nextInt();
      }
    }
    int largest = max(nums);
    System.out.println(largest);
  }
  public static int max(int[][] nums) 
  {
    Scanner input = new Scanner (System.in);

    int max = nums[0][0];
    int x =0;
    int y=0;
    for (int i= 0;i <nums.length;i++)
    {
      for (int j =0; j<nums[i].length;j++)
      {
        if (nums[i][j] > max)
        {
          max = nums[i][j];
          x =i;
          y =j;
        }
      }
    }
    int z = nums[x][y];
    return z;
  }
}