```cpp
#include <iostream>
#include <cmath>
using namespace std;
bool isPan(int x) {
if (x < 2) return false;
int m = floor(sqrt(x) + 0.5);
for (int i = 2; i <= m; ++i)
if (x % i == 0) return false;
return true;
}
int main() {
int n, m;
cin >> n;
for (int i = 1; i <= n; ++i) {
cin >> m;
if (isPan(m)) cout << m << " ";
}
return 0;
}
```
by Tianxn @ 2021-01-09 20:35:32