#include <iostream>
using namespace std;
int main ()
{
    long long lin , col;
    cin >> lin >> col;
    int mat [lin][col];
    for (long long ind_lin = 0 ; ind_lin < lin ; ind_lin ++)
        for (long long ind_col = 0 ; ind_col < col ; ind_col ++)
            cin >> mat [ind_lin][ind_col];
    long long vec [col];
    for (long long ind_col = 0 ; ind_col < col ; ind_col ++)
    {
        int sum = 0;
        for (long long ind_lin = 0 ; ind_lin < lin ; ind_lin ++)
            sum += mat [ind_lin][ind_col];
        vec [ind_col] = sum;
    }
    long long sum_min = vec [0] , key_ind = 0;
    for (long long ind_col = 1 ; ind_col < col ; ind_col ++)
        if (vec [ind_col] < sum_min)
        {
            sum_min = vec [ind_col];
            key_ind = ind_col;
        }
    cout << key_ind + 1;
    return 0;
}