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 s;
int flag;
int main()
{
	cin>>s;
	if(s[0]!='A'){
		puts("WA");return 0;
	}
	for(int i=2;i<=s.length()-2;i++){
		if(s[i]=='C') flag++;
	}
	if(flag!=1){
		puts("WA");return 0;
	}
	for(int i=0;i<s.length();i++)
	 if(s[i]>='A'&&s[i]<='Z'&&s[i]!='A'&&s[i]!='C'){
	 	puts("WA");return 0;
	 }
	puts("AC");
	return 0;
} 