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<iostream>
#include<string.h>
using namespace std;
int main()
{
	char a[15];
	int n,i,s=0,c=0;
	scanf("%s",a);
	n=strlen(a);
	for(i=2;i<=n-2;i++)
	{
		if(a[i]=='C')
		s++;
	}
	for(i=0;i<n;i++)
	{
		if(a[i]>='a'&&a[i]<='z')
		c++;
	}
	if(a[0]=='A'&&s==1&&c==n-2)
		cout<<"AC";
	else
		cout<<"WA";
	return 0;
}