#include<stdio.h>
int main() {
    int m, n;
    scanf("%d %d", &m, &n);
    
    if (m <= 0 || n <= 0) {
        printf("Invalid input");
        return 0;
    }
    
    int matrix[105][105];
    
    for (int i = 0; i < m; i++) {
        for (int j = 0; j < n; j++) {
            scanf("%d", &matrix[i][j]);
        }
    }
    int maxSum = -1000000;
    int maxRow = 0;
    
    for (int i = 0; i < m; i++) {
        int sum = 0;
        for (int j = 0; j < n; j++) {
            sum += matrix
        }
        if (sum > maxSum) {
            maxSum = sum;
            maxRow = i;
        }
    }
    printf("%d", maxRow);
    return 0;
}