#define _CRT_SECURE_NO_DEPRECATE
#include <iostream>
#include <string>
#include <vector>
#include <sstream>

#include <ctime>
#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 all(v) v.begin(),v.end()
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
const ld epsylon = 1e-9;
typedef unsigned int ui;
inline long double get_time(){   
	return (long double)clock()/CLOCKS_PER_SEC;
};
//ld start_time,end_time;

int main()
{
	freopen("profit.in","r",stdin);
	freopen("profit.out","w",stdout);
	//start_time = get_time();
	//program
	int n;
	double a[1024];
	int res = -1;
	double rez = 0;
	int ai, bi;
	scanf("%d",  &n);
	for (int i = 1; i <= n; ++i)
	{
		scanf("%d %d", &ai, &bi);
		if ((double) ai/(double)bi > rez) rez = (double)ai/(double)bi, res = i;
	}
	printf("%d\n", res);
	//end program
	//end_time=get_time()-start_time;
	return 0;
}




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