Codeforces 707C. Pythagorean Triples Solution

Solve in C++:

1. ///**********ALLAH IS ALMIGHTY************///
2. ///AH Tonmoy
3. ///Department of CSE
4. ///Islamic University,Bangladesh
5. #include <iostream>
6. using namespace std;
7. int main()
8. {
9. long long int n;
10. while(cin>>n)
11. {
12. if(n<3)
13. cout<<"-1"<<endl;
14. else
15. {
16. if(n%2==1)
17. {
18. cout<<((n*n)-1)/2<<" "<<((n*n)+1)/2<<endl;
19. }
20. else
21. {
22. cout<<((n*n)/4)-1<<" "<<((n*n)/4)+1<<endl;
23. }
24. }
25. }
26.  
27. }