Problem Statement

You are given a string $S$. Each character of $S$ is uppercase or lowercase English letter. Determine if $S$ satisfies all of the following conditions:

• The initial character of $S$ is an uppercase A.
• There is exactly one occurrence of C between the third character from the beginning and the second to last character (inclusive).
• All letters except the A and C mentioned above are lowercase.

Constraints

• $4 ≤ |S| ≤ 10$ ($|S|$ is the length of the string $S$.)
• Each character of $S$ is uppercase or lowercase English letter.

Input

Input is given from Standard Input in the following format:

S

Output

If $S$ satisfies all of the conditions in the problem statement, print AC; otherwise, print WA.