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<iostream>
#include<string>
using namespace std;
int main(){
  string s;cin >> s;int n = s.size(),cc = 0,i;bool ok = true;
  for(i=0;i<n;i++){
    if(i==0 && s[i] != 'A') ok = false;
    if(i>=2 && i<=n-2 && s[i] == 'C') cc++;
    if((i==1 || i==n-1) && !('a' <= s[i] && s[i] <= 'z')) ok = false;
  }
  cout << ((ok && cc==1) ? "AC":"WA") << endl;
}