#include<iostream>
#include<algorithm>

using namespace std;

int b[200005];
int bs[100005];

#define GETA 100000

int main(){

	int N;

	cin>>N;

	for(int i=0;i<N;i++) cin>>b[i+GETA],bs[i]=b[i+GETA];

	sort(bs,bs+N);

	int i=N-1;
	int j=N-1;
	int c=0;

	while(1){
		//cout<<i<<","<<j<<","<<bs[i]<<","<<b[j+GETA]<<endl;
		if(bs[i]!=b[j+GETA]){
			b[GETA-1-c]=bs[i];
			j--;
			c++;
		}
		else i--,j--;
		if(i==-1||j==-1) break;
	}

	cout<<c<<endl;
}