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 = "WA";
  int A = 0;

  if (S.at(0) == 'A') {
    for (int i = 1; i < S.size(); i++) {
      if (S.at(i) < 'a') A++;
    }
  }

  if (A == 1) {
    for (int i = 2; i < S.size() - 1; i++) {
      if (S.at(i) == 'C') {
        ans = "AC";
      }
    }
  }

  cout << ans << endl;
}