fork download
copy 
  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. bool pass( int n )
  5. {
  6. 	int p = static_cast<int>(std::log10(n))+1;
  7. 	return (n*n) % static_cast<int>(std::pow(10,p)) == n;
  8. }
  9.  
  10. int main() {
  11.  
  12. 	for( int i=1; i<10000; ++i )
  13. 	{
  14. 		if( pass(i) ) std::cout << i << std::endl;
  15. 	}
  16. 	return 0;
  17. }
Success #stdin #stdout 0s 3296KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1
5
6
25
76
376
625
9376
https://ideone.com/itxo02
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!