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  1. #include <bits/stdc++.h>
  2. typedef long long ll;
  3. using namespace std;
  4. void FastCode() {
  5.     std::ios_base::sync_with_stdio();
  6.     cin.tie(0);
  7.     cout.tie(0);
  8. }
  9. bool prime(ll n) {
  10.  
  11.  
  12. for (int j = 2; j <= sqrt(n); j++) {
  13.         if (n % j == 0) {
  14.             return false;
  15.         }
  16.     }
  17.  
  18.  
  19. }
  20. int main()
  21. {
  22.     FastCode();
  23.     ll n;
  24.     cin >> n;
  25.     ll arr[100005]{ 0 };
  26.     for (int i = 0; i < n; i++) {
  27.         cin >> arr[i];
  28.     }
  29.     for (int i = 0; i < n; i++) {
  30.         ll z = sqrt(arr[i]);
  31.         if (z * z == arr[i] && z != 1) {
  32.             if (prime(z)==false) {
  33.                 cout << "NO" << endl;
  34.             }
  35.             else {
  36.                 cout << "YES" << endl;
  37.             }
  38.  
  39.         }
  40.         else {
  41.             cout << "NO" << endl;
  42.         }
  43.  
  44.     }
  45.  
  46.  
  47.     return 0;
  48. }
Success #stdin #stdout 0.01s 5348KB
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https://ideone.com/nuKVfC
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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