Xu1024 is a poor student. One day, Xu1024 found a treasure chest, but he didn't have the password. The treasure chest said: if you want to get the treasure of the pirate king, you need to find three numbers A, B, C that the pirate king likes, making A < B < C and B^2 - A^2 = C^2 - B^2.
Because Xu1024 has its own favorite number, he decided to take this number as A. now you need to help him find the other two numbers B and C to open the treasure chest. Because Xu1024 doesn't like the number which is too large,
the absolute value of the numbers A whill not be greater than 100,000,000.What's more the absolute value of the numbers B and C you find shouldn't exceed 1,000,000,000.
Now I will tell you the number A. Please help Xu1024 find out the integer B and C satisfied that A < B < C and B^2 - A^2 = C^2 - B^2.
If no answer can be found, output "-1".