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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main(){
  4. 	int x,n,s = 0;
  5. 	cin >> n;
  6. 	for(int i = 1;i <= n;i++){
  7. 		cin >> x;
  8. 		if(x < 2) {
  9. 			continue;
  10. 		}
  11. 		bool check = true;
  12. 		for(int j = 2;j <= sqrt(x);j++){
  13. 			if(x % j == 0 && x/j > 1){
  14. 				check = false;
  15. 				break;
  16. 			}
  17. 		}
  18. 		if(check == true){
  19. 		s++; 
  20. 	}
  21. 	}
  22. 	cout << s;
  23. }
  24.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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5
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stdout
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3
https://ideone.com/N5LSFj
language:
C++14 (gcc 8.3)
created:
10 days ago
visibility:
public

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