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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int ans,a[100000],b[100000],c[100000],wa[1000000],n;
  4. void gcd(int x){
  5. 	if(x>n){
  6. 		ans++;
  7. 		if(ans<4){
  8. 			for(int i=1;i<=n;i++){
  9. 				cout<<a[i]<<" ";
  10. 			}
  11. 			cout<<"\n";
  12. 		}
  13. 		return;
  14. 	}
  15. 	for(int i=1;i<=n;i++){
  16. 		if(!wa[i]&&!b[x-i+n]&&!c[x+i]){
  17. 			a[x]=i;
  18. 			wa[i]=b[x-i+n]=c[x+i]=1;
  19. 			gcd(x+1);
  20. 			wa[i]=b[x-i+n]=c[x+i]=0;
  21. 		}
  22. 	}
  23. }
  24. int main(){
  25. 	cin>>n;
  26. 	gcd(1);
  27. 	cout<<ans;
  28. }
Success #stdin #stdout 0s 5328KB
comments (?)
stdin
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6
stdout
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2 4 6 1 3 5 
3 6 2 5 1 4 
4 1 5 2 6 3 
4
https://ideone.com/uo5pXX
language:
C++ (gcc 8.3)
created:
8 hours ago
visibility:
public

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