保证AC

#include<bits/stdc++.h>
using namespace std;
int main(){
	double n, average, a[101], f=0;
	cin >> n;
	for (int i = 1; i <= n; i++){
        cin >> a[i];
    }
	for (int i = 1; i <= n; i++){
        f += a[i];
    }
	average = f / n;
	for (int i = 1; i <= n; i++){
		if (a[i] < average){
            cout << a[i] << " ";
        }
	}
}