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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int  a,b;
  6. 	while(cin>>a>>b)
  7. 	{
  8. 		int count=0;
  9. 		for(int i=a;i<=b;i++)
  10. 		{
  11. 			int c=0;
  12. 			for(int j=1;j<=i;j++)
  13. 			{
  14. 				if(i%j==0)
  15. 				 c++;
  16. 			}
  17. 			if(c==2)
  18. 			  count++;
  19. 		}
  20. 		cout<<count<<"\n";
  21. 	}
  22. 	return 0;
  23. }
Success #stdin #stdout 0s 5496KB
comments (?)
stdin
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4 12

70 110

5 150
stdout
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3
10
33
https://ideone.com/BZbh5Z
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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