#define _USE_MATH_DEFINES
#include "bits/stdc++.h"
using namespace std;

//#define int long long
#define DBG 1
#define dump(o) if(DBG){cerr<<#o<<" "<<o<<endl;}
#define dumpc(o) if(DBG){cerr<<#o; for(auto &e:(o))cerr<<" "<<e;cerr<<endl;}
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(b)-1;i>=(a);i--)
#define each(it,c) for(auto it=(c).begin();it!=(c).end();it++)
#define all(c) c.begin(),c.end()
const int INF = sizeof(int) == sizeof(long long) ? 0x3f3f3f3f3f3f3f3fLL : 0x3f3f3f3f;
const int MOD = (int)(1e9 + 7);

signed main() {
	int n;
	while (cin >> n, n) {
		vector<double>v(n);
		rep(i, 0, n) {
			int p; cin >> p; p--;
			double h, w; cin >> h >> w;
			h /= 100;
			v[p] = w / (h*h);
		}
		int index(0);
		double bmi(v[0]);
		rep(i, 1, n) {
			if (abs(22 - v[i]) < abs(22 - bmi)) {
				bmi = v[i];
				index = i;
			}
		}
		cout << index + 1 << endl;

	}
	return 0;
}