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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// find if a number is a multiple of 3
  6. 	int n = 219;
  7. 	bool flag = true;
  8. 	int count1 = 0, count2 = 0;
  9. 	while(n) {
  10. 		if (flag && (n&1) == 1) count1++;
  11. 		else if (!flag && (n&1) == 1) count2++;
  12. 		flag = !flag;
  13. 		n= n>>1;
  14. 	}
  15.  
  16. 	int dif = (count1-count2);
  17.  
  18. 	if(dif%3==0) cout<<"yes";
  19. 	else cout<<"no";
  20.  
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 15232KB
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Standard input is empty
stdout
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yes
https://ideone.com/2t5TFd
check if number is multiple of 3
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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