考点：贪心，经典均分纸牌问题

C++ 代码

#include <iostream>
using namespace std;
int n;
int a[105];
int main()
{
    int s = 0, cnt = 0;
    cin >> n;
    for(int i=0; i<n; i++)
    {
        cin >> a[i];
        s += a[i];
    }
    s /= n;
    for(int i=0; i<n; i++)
        a[i] -= s;
    for(int i=0; i<n; i++)
    {
        if(!a[i]) continue;
        cnt ++;
        a[i+1] += a[i];
    }
    cout << cnt << endl;

    return 0;
}