#include<iostream>
#include<iomanip>
using namespace std;

long long n,place,scpl;
int nowl,nowsc,now;

int main()
{
	cin>>n;
	cin>>nowl;
	nowsc=nowl;
	place=1;
	scpl=1;
	for(int i=2;i<=n;++i)
	{
		cin>>now;
		if(now>nowl)
		{
			nowsc=nowl;
			scpl=place;
			nowl=now;
			place=i;
		}
		else if(now>nowsc)
		{
			nowsc=now;
			scpl=i;
		}
	}
	cout<<scpl<<endl;
	return 0;
}