#include <stdio.h>

void main() {
        int n, m;

        scanf("%d", &n);
        scanf("%d", &m);

        int matr[n][m];

        for (int i = 0; i < n; i++) {
                for (int j = 0; j < m; j++) {
                        scanf("%d", &matr[i][j]);
                }
        }

        int maxSum = 0, rowIndex = -1;

        for (int i = 0; i < n; i++) {
                int sum = 0;
                for (int j = 0; j < m; j++) {
                        sum += matr[i][j];
                }

                if (sum > maxSum) {
                        maxSum = sum;
                        rowIndex = i + 1;
                }
        }

        printf("%d", rowIndex);

}