Perfect Square Checker

Given an integer n, determine whether it is a perfect square. A perfect square is defined as an integer that can be expressed as \( k^2 \) for some integer \( k \). In other words, if there exists an integer \( k \) such that \( k^2 = n \), then n is a perfect square.

The input is read from stdin and the answer must be printed to stdout. Output "Yes" if n is a perfect square; otherwise, output "No".

inputFormat

The input consists of one line containing a single integer n.

outputFormat

Print "Yes" if n is a perfect square; otherwise, print "No".

16

Yes