my code is working on the testcases i am providing correctfully but does not work for even a single testcase given by hackerrank. Not runtime , but also wrong answers , it says. I have tried for a lot of custom testcases and it works on them

Only the last test case not passing please help

YES! I did it!

With correct submissions around only 15% of total, I wonder why this problem was classified as "easy"...

way to solution

13^2−10^2−7^2=20 (a+x)^2 - a^2 - (a-x)^2 = n

a^2+2ax+x^2-a^2-(a^2-2ax+x^2) = n

a^2+2ax+x^2-a^2-a^2+2ax-x^2 = n 4ax-a^2 = n a(4x-a) = n

Since n, x and a are integers it raises following conditions,

n%a==0;

The interesing thing is that, n should be perfectly divisible by a

4x-a = n/a 4x = n/a + a