#include<iostream>
#include<cstdio>
using namespace std;
int n,pi,ans=0;
int a[10000];
int main()
{
	freopen("jfzp.in","r",stdin);
	freopen("jfzp.out","w",stdout); 
	scanf("%d",&n);
	for(int i=0;i<n;i++)
	{
		scanf("%d",&a[i]);
		pi+=a[i];
	}
	pi/=n;
	for(int i=0;i<n;i++)
	{
		a[i]-=pi;
	}
	int j=0;
	if(a[j]==0&&j<n)
	{
		j++;
	}
	while(a[j]!=0&&j<n)
	{
		a[j+1]+=a[j];
		a[j]-=a[j];
		j++;
		ans++;	
	}
	printf("%d",ans);
	fclose(stdin);
	fclose(stdout);
	return 0;	
}