#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000000

int main(){
	
	int N;
	cin>>N;
	
	vector<int> A(N);
	rep(i,N){
		scanf("%d",&A[i]);
	}
	
	int cur = 0;
	int ans = Inf;
	int m = 0;
	rep(i,N-1){
		if(A[i] > A[i+1])cur++;
		m = max(m,A[i]);
	}
	m = max(m,A.back());
	if(m==A.back())ans = cur;
	
	rep(i,N){
		if(A[i]>A[(i+1)%N])cur--;
		if(A[(i+N-1)%N]>A[i])cur++;
		ans = min(ans,cur+1);
	}
	
	cout<<ans<<endl;
	
    return 0;
}