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;
  int n=s.size(),ans=1,count=0;
  if(s.at(0)!='A') ans=0;
  for(int i=2;i<n-1;i++) if(s.at(i)=='C') count++;
  if(count!=1) ans=0;
  for(int i=1;i<n;i++) if((s.at(i)<'a'||s.at(i)>'z')&&s.at(i)!='C') ans=0;
  cout<<(ans?"AC":"WA");
}