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>
int main(){
	char s[12];
	scanf("%s",s);
	int i,j,k,l=strlen(s),t=0;
	if(s[0]!='A'){printf("WA");
	return 0;
	} 
 for(i=1;i<l;i++){
if(s[i]=='C'){
if((i<2)||(i>l-2)){printf("WA");
	return 0;
}

t++;
 }
else if(s[i]<'a'){printf("WA");
	return 0;
}
}
if(t==1)printf("AC");
else printf("WA");
return 0;
}