#include <bits/stdc++.h>
using namespace std;
#define int long long
int x[100050],dp1[100050],dp2[100050],n,m,maxx=0,minn=231,ans;
signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0),cout.tie(0);
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>x[i];
	}
	for(int i=1;i<=n;i++){
		dp1[i]=1;
		dp2[i]=1;
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<i;j++){
			if(x[i]>x[j]){
				dp1[i]=max(dp1[i],dp1[j]+1);
			}
		}
	}
	for(int i=n;i>=1;i--){
		for(int j=n;j>i;j--){
			if(x[i]>x[j]){
				dp2[i]=max(dp2[i],dp2[j]+1);
 
			}
		}
	}
	maxx=0;
	for(int i=1;i<=n;i++){
		maxx=max(maxx,dp1[i]+dp2[i]-1);
	}
	cout<<n-maxx;
	return 0;
}

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8
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