---

#include <iostream>
using namespace std;
int main() {
    int n; cin >> n;
    double *p = new double[n];
    for(int i=0; i<n; i++) cin >> p[i];
    for(int i=0; i<n; i++) if(p[i]>0) p[i]*=p[i];
    for(int i=0; i<n; i++) cout << p[i] << ' ';
    delete[] p;
}