#include<iostream>
#include<cstring>
#include<cstdio>
#define FOR(i,a) for(int i=0;i!=n;++i)
using namespace std;

void setIO(string s){
	string a=s+".in",b=s+".out";
	freopen(a.c_str(),"r",stdin);
	freopen(b.c_str(),"w",stdout);	
}

int main(){
	setIO("jfzp");
	
  	int n,a[100],sum=0,step=0;
  	scanf("%d",&n);
 	FOR(i,n){
	    scanf("%d",a+i);
	    sum += a[i];
	}
	int average = sum/n;
	FOR(i,n){
		int t = 0;
	    if(a[i]!=average){
	      	t = a[i]-average;
	      	a[i+1] += t;
	      	step++;
	    }
	}
	printf("%d",step);
	return 0;
}