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;

bool ok(string s) {
  if (s[0] != 'A') return false;
  if (count(s.begin() + 2, s.end() - 1, 'C') != 1) return false;
  for (char c : s) {
    if (c != 'A' && c != 'C' && isupper(c)) return false;
  }
  return true;
}

int main(){
    string s;
    cin >> s;
    cout << (ok(s) ? "AC" : "WA") << endl;
    
    return 0;
}