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(void)
{
	char s[11];
	int n,i,z=0,y=0;
	scanf("%s",s);
	n=strlen(s);
	for(i=2; i<n-1; i++){
		if(s[i]=='C'){
			z=z+1;
		}
		if('a'<=s[i] && s[i]<='z'){
			y=y+1;
		}
	}
	if(z==1 && y==(n-4) && s[0]=='A' && 'a'<=s[1] && s[1]<='z' && 'a'<=s[n-1] && s[n-1]<='z'){
		printf("AC\n");
	}else{
		printf("WA\n");
	}
	return 0;
}