#include <cstdio>

using namespace std;

int main(){

int i=0,max=0,daywork[7];

while(i<7){

int a,b;

cin>>a>>b;

daywork[i++]=a+b;

}

for (int p=0;p<7;p++)if (daywork[p]>daywork[max])max=p;

cout<<max+1<<endl;

}