#include<bits/stdc++.h>
using namespace std;
#define maxn 100003
int l[maxn],r[maxn];
int main(){
    int n,lsum=0,rsum=0,ans=0,id=0;
    cin>>n;
    for (int i=1;i<=n;i++){
        cin>>l[i]>>r[i];
        lsum+=l[i];
        rsum+=r[i];
    }
    ans=abs(lsum-rsum);
    for (int i=1;i<=n;i++){
        lsum-=l[i];
        rsum-=r[i];
        lsum+=r[i];
        rsum+=l[i];
        if (abs(lsum-rsum)>ans){
            ans=abs(lsum-rsum);
            id=i;
        }
        lsum=lsum-r[i]+l[i];
        rsum=rsum-l[i]+r[i];
    } 
    cout<<id;
}