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;



int main()
{
  string S;cin>>S;
  if(S[0]!='A'||S.size()<3){printf("WA");return 0;}
  int countc=0;
  for(int i=2;i<S.size()-1;i++)if(S[i]=='C')countc++;
  if(countc!=1){printf("WA");return 0;}
  for(int i=1;i<S.size();i++)if(S[i]!='A'&&S[i]!='C'&&S[i]-'A'>=0&&S[i]-'A'<=26){printf("WA");return 0;}
  printf("AC");
}