#include<stdio.h>
struct structure
{
    int n1,n2;
    int arr[100][100];
};
int main()
{
    struct structure s1;
    scanf("%d %d",&s1.n1,&s1.n2);
    if(s1.n1<0 || s1.n1,&s1.n2);
     printf("Invalid input");
     return 0;
}
 int c=0,k=0,row=0;
  for(int i=0;i<s1.n1;i++)
  {
      for(int j=0;j<s1.n2;j++)
  {
      scanf("%d",&s1.arr[i][j]);
      c+=s1.arr[i][j];
      if(j+1==s1.n2)
      {
          if(k<c)
          {
              k=c;
              row=i;
          }
      }
  }
   c=0;
  }
  printf("%d",row);
  return 0;
  }