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 i,j=0,k=0,l=0;
  if(s[0]!='A') j++;
  for(i=2; i<s.size()-1; i++){
    if(s[i]=='C') k++;
  }
  for(i=1; i<s.size(); i++){
    if(s[i]-'a'>=0 && s[i]-'a'<=25) l++;
  }
  if(j==0 && k==1 && l==s.size()-2){
    cout << "AC";
  }else{
    cout << "WA";
  }
}

