//uva12959
#include <iostream>
using namespace std;
int main() {
int J, R;
while (cin >> J >> R && J && R) {
// int vp[J] = {0};
int vp[512] = {0};
int winner = 0;
int tmp = 0;
for (int i = 0; i < J * R; ++i) {
cin >> tmp;
int cur = i % J;
vp[cur] += tmp;
if (vp[cur] >= vp[winner])
winner = cur;
}
cout << winner + 1 << endl;
}
return 0;
}