前两个样例是对的 代码：

#include<iostream>
#include<algorithm>
using namespace std;
bool comp(int a,int b){
    return a>b;
}
int main(){
    int n,a[101]={},s=0,sum=0;
    cin>>n;
    for (int i=1;i<=n;i++){
        cin>>a[i];
        s+=a[i];
    }
    sort(a+1,a+1+n);
    s/=n;
    for (int i=1;i<=n;i++) if (a[i]>s) a[i+1]+=a[i]-s,sum++;
    cout<<sum;
    return 0;
}