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[233];

int main(){
	scanf("%s",s+1);
	int len=strlen(s+1);
	if(s[1]!='A'){
		puts("WA");
		return 0;
	}
	int cnt=0;
	for(int i=3;i<=len-1;i++)
		if(s[i]=='C'){
			cnt++; s[i]='a';	
		}
	if(cnt!=1){
		puts("WA");
		return 0;
	}
	for(int i=2;i<=len;i++)
		if(s[i]<'a' || s[i]>'z'){
			puts("WA"); return 0;
		}
	puts("AC");
	return 0;
}