#include <fstream>

using namespace std;
double v1[20], v2[20];
int main()
{
    ifstream cin("blackfriday.in");
    ofstream cout("blackfriday.out");
    int n, k;
    double maxx = -1;
    cin>>n;
    for (int i=0;i<n;i++) {
        cin>>v1[i];
    }
    for (int i=0;i<n;i++) {
        cin>>v2[i];
    }

    for(int i=0; i<n; i++){
        if(v2[i]<=v1[i]){
            v1[i] = ((v1[i]-v2[i])*100.0) / v1[i];
        } else v1[i] = -1;

        if(maxx < v1[i]){
            maxx = v1[i];
            k = i;
        }
    }

    cout<<k+1<<endl;

    return 0;
}