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 l = s.size();
string ans = "AC";

if(s[0] != 'A'){
  ans = "WA";
}
int count = 0;

for(int i = 1;i < l;i++){
  if(isupper(s[i])){
    if(i == 1||i==l-1||s[i] != 'C'){
      ans = "WA";
    }
    count++;
  }
}

if(count != 1){
  ans = "WA";
}
cout<< ans <<endl;

}