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  1. #include <iostream>
  2. #include <cmath>
  3. #include <algorithm>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	long long a, b, k;
  8. 	cin>>a>>b>>k;
  9. 	long long ans=0;
  10. 	for(long long y=0; y<=1000000; y++){
  11. 		if(y*y*y>=a && y*y*y<=b){
  12. 			long long l=ceil(sqrt(max(y*y*y-k, a))), r=floor(sqrt(min(y*y*y+k, b)));
  13.  
  14. 			ans+=(r-l+1);
  15. 		}
  16. 	}
  17. 	cout<<ans;
  18. 	return 0;
  19. }
Success #stdin #stdout 0.01s 5592KB
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https://ideone.com/cps8eW
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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