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<cstring>
using namespace std;
int main()
{
	char s[15];
	while(cin>>s){
		int n=strlen(s),f=1,count=0,k;
		if(s[0]!='A') f=0;
		if(s[1]=='C' || s[n-1]=='C') f=0;
		for(int i=1;i<n;i++)
			if(s[i]<'a'){
				k=i;count++;
			} 
		if(f==1&&count==1&&s[k]=='C') cout<<"AC"<<endl;
		else cout<<"WA"<<endl;
	}	
	return 0;
}