#include <bits/stdc++.h>

using namespace std;
int main()
{
	int n;
	cin>>n;
	vector<int> P(n);
	for(auto& p : P){
	 	cin>>p;
	}
	int l=0; int r=1; int ans = -1; int current = 0;
	while(r<n){
		if(P[r]>P[l]){
			current += r-l;
			ans = l+1;
			l=r;
		}
		r++;
	}
	cout<<ans<<endl;
}