#include<bits/stdc++.h>
using namespace std;
int n,a[205],sum,avg,ans; 
int main(){
     cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        sum+=a[i];
    }
    avg=sum/n;
    for(int i=1;i<=n/2+1;i++){
        if(a[i]!=avg){
            ans++;
               
               
            a[i+1]+=a[i]-avg;
            a[i]=avg;
        }
        if(a[n-i+1]!=avg){
            ans++;
           
            a[n-i]+=a[n-i+1]-avg;
            a[n-i+1]=avg;
        }
           
           
    }
    cout<<ans;
    return 0;
}
/**************************************************************
	Problem: 1371
	User: wengsihan
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/