Problem Description
In mathematics, a squarefree number is one which is divisible by no perfect squares, except 1. For example, 10 is square-free but 18 is not, as it is divisible by 9 = 3^2. Now you need to determine whether an integer is squarefree or not.
Input
The first line contains an integer T indicating the number of test cases.
For each test case, there is a single line contains an integer N.
Technical Specification
Output
For each test case, output the case number first. Then output "Yes" if N is squarefree, "No" otherwise.
Sample Input
2
30
75
Sample Output
Case 1: Yes
Case 2: No