#include <iostream>
using namespace std;

int main() {
	int arr1[7][2];
	int arr2[7];

	int i = 0, j = 0;
	for (i = 0; i < 7; i++) {
		for (j = 0; j < 2; j++) {
			cin >> arr1[i][j];
		}
	}
	int k = 0;
	while (k < 7) {
		arr2[k] = arr1[k][0] + arr1[k][1];
		k++;
	}
	int max = arr2[0];
	int temp;
	int final=0;
	for (k = 1; k < 7; k++) {
		if (arr2[k] > max) {
			max = arr2[k];
			temp = k;
		}
	}
	if (max < 8)
		cout << final;
	else
		cout << temp + 1;
	return 0;
}`````