#define _CRT_SECURE_NO_DEPRECATE
#include <iostream> 
#include <string>
#include <vector>
#include <sstream>
#include <queue>
#include <algorithm>
#include <iomanip>
#include <map>
#include <set>
#include <math.h>
#include <stack>
#include <deque>
#include <numeric>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <bitset>
#define mpair make_pair
#define all(v) v.begin(),v.end()
using namespace std;
typedef long long ll;
typedef long double ld;
const ld epsylon = 1e-9;
int main()
{
  freopen("profit.in","r",stdin);
  freopen("profit.out", "w", stdout);

  int n;
  cin >> n;
  vector<pair<int,int> > a(n);
  for (int i = 0; i< n;++i) {
    cin >> a[i].first >> a[i].second; 
  }

  int maxi = 1;
  for (int i=2;i<n;++i) {
    if ( a[i].first * a[maxi].second > a[maxi].first * a[i].second) {
      maxi = i;
    }
  }
  cout << maxi+1 << endl;
  return 0;
}