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<algorithm>
#include<cstring>
using namespace std;
char s[12];
int k;
bool f=0;
int main()
{
	scanf("%s",s);
	int n=strlen(s);
	if(s[0]!='A')f=1;
	for(int i=1;i<n;i++)
		if(s[i]=='C'&&i>1&&i<n-1)k++;
		else	if(!(s[i]>='a'&&s[i]<='z'))
					f=1;
	if(k!=1)f=1;
	if(f)
		printf("WA");
	else printf("AC");
	//return 0;
}