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`.

Examples

Input

AtCoder


Output

AC


Input

ACoder


Output

WA


Input

AcycliC


Output

WA


Input

AtCoCo


Output

WA


Input

Atcoder


Output

WA

import java.util.Scanner;

class Main{
	public static void main(String[] main) {
		Scanner sc=new Scanner(System.in);
		String a=sc.next();

		boolean isA=false;
		if(a.charAt(0)=='A') {
			isA=true;
		}
		char[] mjs=new char[a.length()];
		for(int i=0; i<a.length(); i++) {
			mjs[i]=a.charAt(i);
		}

		mjs[0]='a';

		int C_cnt=0;
		for(int i=2 ;i<=a.length()-2; i++) {
			if(mjs[i]=='C') {
				C_cnt++;
				mjs[i]='c';
			}
		}

		boolean caps=true;

		for(int i=0; i<a.length(); i++) {
			if((mjs[i]+"").equals((mjs[i]+"").toLowerCase())) {
				//
			}
			else {
				caps=false;
			}
		}

		if(C_cnt==1 && caps==true && isA==true) {
			System.out.println("AC");
		}
		else {
			System.out.println("WA");
		}
	}
}