fork(9) download 
  1. #include <iostream>
  2. #include <algorithm>
  3. using namespace std;
  4.  
  5. int queens (){
  6. 	int pos[] = {0,1,2,3,4,5,6,7},ans = 0;
  7. 	while(next_permutation(pos,pos+8)){
  8. 		bool ok = true;
  9. 		for(int* p = pos;p<pos+8;p++)
  10. 			if ( count_if(pos,p,[=](int& j){return p - &j == *p-j || p - &j == j - *p ;}) ) 
  11. 				ok = false;
  12. 		ans += ok;
  13. 	}
  14. 	return ans;
  15. }
  16. int main() {
  17. 	cout<<queens();
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 3140KB
comments (?)
stdin 
Standard input is empty
stdout 
92
https://ideone.com/cjee0Y
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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!