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>
using namespace std;
char a[15];
int n;
bool ok()
{
	if(a[1]!='A') return 0;
	if(a[n]=='C') return 0;
	int o=0;
	for(int i=3;i<n;i++)
		o+=a[i]=='C';
	if(!o) return  0;
	if(o>1) return 0;
	for(int i=2;i<=n;i++)
		if(isupper(a[i]) and a[i]!='C') return 0;
	return 1;
	
}

int main()
{
	scanf("%s",a+1);
	 n=strlen(a+1);
	if(ok()) cout<<"AC";
	else cout<<"WA";
	
}