#include "bits/stdc++.h"
using namespace std;

int main() {
    int n;
    cin >> n;
    int y[n];
    long long sum = 0, ans = 0;
    for(int i = 0; i < n; i++) {
        cin >> y[i];
        sum += y[i];
    }
    int ave;
    if(sum % n == 0) {
        ave = sum/n;
    } else {
        ave = sum/n + 1;
    }
    for(int i = 0; i < n; i++) {
        ans += abs(y[i] - ave);
    }
    cout << ans << endl;
    return 0;
}