Java 版本
import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int m = -1, d = 0, a, b;
for (int i = 0; i < 7; i++) {
a = input.nextInt();
b = input.nextInt();
if (a + b > 8)
if (m < a + b) {
m = a + b;
d = i + 1;
}
}
System.out.printf("%d", d);
}
}