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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int del(int n)
  5. {
  6. 	int m = 0;
  7. 	for (int i = 1; i*i <= n; ++i){
  8. 		if (n % i == 0){
  9. 			if (i*i == n){
  10. 				m += 1;
  11. 			}
  12. 			else{
  13. 				m += 2;
  14. 			}
  15. 		}
  16. 	}
  17. 	return m;
  18. }
  19.  
  20. int main() {
  21. 	int count = 0;
  22. 	int A, B;
  23. 	cin >> A >> B;
  24. 	for (int i = A; i <= B; ++i){
  25. 		if (del(i) == 3){
  26. 			++count;
  27. 		}
  28. 	}
  29. 	cout << count << endl;
  30. }
Success #stdin #stdout 0.01s 5324KB
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https://ideone.com/MaVdNu
language:
C++ (gcc 8.3)
created:
9 hours ago
visibility:
public

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