### 633. Sum of Square Numbers

Given a non-negative integer c, your task is to decide whether there're two integers a and b such that a2 + b2 = c.

Example 1:

Input: 5
Output: True
Explanation: 1 * 1 + 2 * 2 = 5


Example 2:

Input: 3
Output: False


Seen this question in a real interview before?
When did you encounter this question?
Which company?