#include<iostream>
#include<iomanip>
#include<cmath>
#include<algorithm>
#include<cstdio>
#include<string>
using namespace std;
int a[150];
int main(){
	double t,ans;
	int n,total=0,sum=0;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		total+=a[i];
	}ans=total/n*1.0;
	for(int i=1;i<n;i++){
		if(ans!=a[i]){
			t=ans-a[i]*1.0;
			a[i+1]+=t;
			sum++;			
		}
	}
	cout<<sum<<endl;
	return 0;
}