小贪心

#include <bits/stdc++.h>
using namespace std;
int main() {
    int n, sum = 0;
    cin >> n;
    vector <int> num(n);
    for (auto &x : num) {
        cin >> x;
        sum += x;
    }
    int res = sum / n, cnt = 0;
    
    for (int i = 0; i < n - 1; i ++) {
        if (num[i] != res) {
            if (num[i] > res) {
                num[i + 1] += num[i] - res;
            }else {
                num[i + 1] -= res - num[i];
            }
            cnt ++;
        }
    }
    cout << cnt << '\n';
    return 0;
}