#include<bits/stdc++.h>
using namespace std;
int n;
struct gangguan{
	int len,id,size;//len表示长度，id表示编号，size表示粗细
}a[1005];
bool cmp(gangguan ga,gangguan gb){
	if(ga.len==gb.len){
		if(ga.size==gb.size)return ga.id>gb.id;
		return ga.size<gb.size;
	}
	return ga.len>gb.len;
} 
int main(){
	cin>>n;
	for(int i=1;i<=n;i++)cin>>a[i].len>>a[i].size>>a[i].id;
	sort(a+1,a+n+1,cmp);
	cout<<a[1].id;
	return 0;
}