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;
#define int long long int
int32_t main(){
	char s[15];cin>>s;
	if(s[0]!='A'){
		cout<<"WA";return 0;
	}
	if(count(s+2,s+strlen(s)-1,'C')!=1){
		cout<<"WA";return 0;
	}
	if(count_if(s+1,s+strlen(s),[](char c){return c>='A'&&c<='Z';})>1){
		cout<<"WA";return 0;
	}
	cout<<"AC";
}
