#include<bits/stdc++.h>
using namespace std;   
int a,b,s,maxn,i,d;
int main(){
    for(i=1;i<8;i++){
        cin>>a>>b;   
        s=a+b;  
        if((s>maxn)&&(s>8)){
            maxn=s;
            d=i;
        }
      }
    cout<<d; 
    return 0;             
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,m,p,q=0;
    for(int i=1;i<=7;i++){
		cin>>n>>m;
		if(n+m>8&&m+n>q){
			p=i;
			q=m+n;
		}
	}
	cout<<p;
	return 0;
}

#include<bits/stdc++.h>
using namespace std;

int main() {
    int time[7][2], anger = 8, day = 0;
    for (int i = 0; i < 7; i++) {
        cin >> time[i][0] >> time[i][1];
        if (time[i][0] + time[i][1] > anger) {
            anger = time[i][0] + time[i][1];
            day = i + 1;
        }
    }
    cout << day;
    return 0;
}