POJ 2656

#include<iostream>
#include<stdio.h>

using namespace std;

int main()
{
    //freopen("acm.acm","r",stdin);
    int num;
    int time;
    int ans;
    int a;
    int b;
    int max;
    while(1)
    {
        max = 0;
        time = 0;
        ans = 0;
        cin>>num;
        if(num == 0)
            break;
        while(num --)
        {
            cin>>a;
            cin>>b;
            ++ time;
            if(a + b > max && a + b > 8)
            {
                max = a + b;
                ans = time;
            }
        }
        cout<<ans<<endl;
    }
}