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
#include<bits/stdc++.h>
using namespace std;
int main(){
	char S[12];
	scanf("%s", S);
	if(S[0] != 'A') printf("WA");
	else{
		int cnt = 0;
		for(int i = 2; i < strlen(S) - 1; i += 1) if(S[i] == 'C') cnt += 1;
		if(cnt != 1) printf("WA");
		else{
			for(int i = 1; i < strlen(S); i += 1) if(S[i] <= 'Z') cnt += 1;
			if(cnt != 2) printf("WA");
			else printf("AC");
		}
	}
}