#include <iostream>
#include <fstream>
#include <algorithm>
#include <vector>

using namespace std;

int main()
{
    int n,sum=0;
    cin>>n;
    vector<int>a,delta;
    for(int i=1;i<=n;i++){
        int x;
        cin>>x;
        a.push_back(x);
        sum+=x;
    }
    sum=sum/n;
    int db=0;
    for(int i=0;i<n;i++){
        if(a[i]>sum){
            while(a[i]>sum){
                a[i]=a[i]-sum;
                db++;
            }
        }
    }
    cout<<db;
    return 0;
}