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

int main() {
    cin.tie(0);
    ios::sync_with_stdio(0);

    long n, avg=0, moves = 0;
    cin >> n;

    long mag[n];
    for(int i = 0; i < n; i++) {
        cin >> mag[i];
        avg += mag[i];
    }
    avg /= n;

    for(int i = 0; i < n-1; i++)
    {
        if(mag[i] == avg)
            continue;
        mag[i+1] += mag[i]-avg;
        moves++;
    }
    cout << moves << "\n";
}