You are given an integer input N and you have to find whether it is the sum or the difference of the integer 5. (5+5, 5+5+5, 5-5,5-5-5+5+5…..)
Input: N = 10 Output: YES Explanation: Because 10 can be written as a sum of 5+5.
Input: N = 9 Output: NO Explanation: 9 can not be written in the above form.
You don't need to read input or print anything. Your task is to complete the function isValid() which takes an integer N and returns "YES" or "NO".
Expected Time Complexity: O(1)
Expected Auxiliary Space: O(1)
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