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;
string a;
bool c;
int main()
{
	cin>>a;
	if(a[0]!='A')puts("WA");
	else
	{
		for(int s=1;s<a.size();s++)
		{
			if(a[s]=='C'&&c==1||a[s]!='C'&&a[s]>='A'&&a[s]<='Z'||a[s]=='C'&&(s<2||s==a.size()-1))
			{
				puts("WA");
				return 0;
			}
			if(a[s]=='C')c=1;
		}
		if(c)
		puts("AC");
		else
		puts("WA");
	}
}