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<cstdio>
#include<cstring>
char s[105];
int main(){
	bool f=1;
	scanf("%s",s);
	if (s[0]!='A')f=0;bool p=1;
	for (int i=2;i<strlen(s)-1;i++)if (s[i]=='C'){
		s[i]='c';
		p=0;
		break;
	}
	if (p)f=0;
	for (int i=1;i<strlen(s);i++)if (s[i]>='A'&&s[i]<='Z')f=0;
	if (f){
		printf("AC\n");
	}
	else printf("WA\n");
}