#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
	freopen("jfzp.in","r",stdin);
	freopen("jfzp.out","w",stdout);
	int n,zs=0,step=0;
	int a[10010];
	scanf("%d",&n);
	for(int i=1;i<=n;i++)
	{
		scanf("%d",&a[i]);
		zs+=a[i];
	}
	zs/=n;
	for(int i=1;i<=n;i++) a[i]-=zs;
	int i=1;int j=n;
	while(a[i]==0&&i<n)
	  i++;
	while(a[i]==0&&j>1)
	  j--;
	while(i<j)
	{
		a[i+1]+=a[i];
		a[i]=0;
		step++;
		i++;
		while(a[i]==0&&i<j)
		  i++;
	}
	printf("%d\n",step);
	return 0;
}