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<stdio.h>
#include<string.h>
int main()
{	int n=0,f=0,t=1;
	char s[11];
	scanf("%s",s);
	if(s[0]=='A')
	{for(n=1;n<strlen(s);n++)
	if(s[n]=='C'&&n!=strlen(s)-1&&!f&&n!=1)
	f=1;
	else if(64<=s[n]&&s[n]<=90)
	t=0;
	}
	if(f&&t)
	printf("AC\n");
	else
	printf("WA\n");
}