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;
  string ans="AC";
  int cnt=0,num=0;
  for(int i=1;i<s.size();i++){
    if(s[i]<'a') cnt++;
  }
  for(int i=2;i<s.size()-1;i++){
    if(s[i]=='C') num++;
  }
  
  if(s[0]!='A'){
    ans="WA";
  }
  else {
    if(num!=1) ans="WA";
    else{
      if(cnt!=1) ans="WA";
    }
  }
  cout<<ans<<endl;
}