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

int main() {
    int N;
    cin >> N;

    vector<long long> K(N);
    long long sum = 0;
    for (int i = 0; i < N; i++) {
        cin >> K[i];
        sum += K[i];
    }

    long long avg = sum / N;
    long long pref = 0;
    long long moves = 0;

    for (int i = 0; i < N - 1; i++) {
        pref += K[i];
        if (pref != avg * (i + 1))
            moves++;
    }

    cout << moves;
}