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 s[10000005];
int cnt;
int main()
{
	scanf("%s",&s);
	if (s[0]!='A')
	 {
	 	puts("WA");
	 	return 0;
	 }
	for (int i=2;s[i+1];i++)
	 if (s[i]=='C')cnt++,s[i]='a';
	if (cnt!=1)
	 {
	 	puts("WA");
	 	return 0;
	 }   
	for (int i=1;s[i];i++)
	 if (s[i]>'z'||s[i]<'a')
	  {
	  	puts("WA");
	  	return 0;
	  } 
	puts("AC"); 
} 