#include <iostream>
#include <vector>
#include <algorithm> 
using namespace std;
int main(){
	int n;
	cin >> n;
	vector<int> a(n);
	int sum = 0;
	for(int i = 0; i < n; i++){
		cin >> a[i];
		sum += a[i];
	}
	int avg = sum / n;
    int js = 0;
	for(int i = 0; i < n - 1; i++){
        if(a[i] != avg){
            int tmp = a[i] - avg;
            a[i] = avg;
            a[i + 1] += tmp;
            js++;
        }
    }
	cout << js << endl;
	return 0;
}