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 ch[100];

bool check(int t)
{
	if(ch[0]!='A')return 0;
	ch[0]='a';
	int k=0;
	for(int i=2;i<t-1;i++)
		if(ch[i]=='C')k++,ch[i]='c';
	if(k!=1)return 0;
	for(int i=0;i<t;i++)
		if(ch[i]<'a'||ch[i]>'z')return 0;
	return 1;
}

int main()
{
	scanf("%s",ch);
	
	if(!check(strlen(ch)))printf("WA");
	else printf("AC");
	
	return 0;
}