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;
  int count = 0, countc = 0;
  cin >> s;
  for (int i=2; i<s.size()-1; i++) {
    if (isupper(s[i])) {
      count++;
      if (s[i]=='C') countc++;
    }
  }
  if (s[0]=='A' && islower(s[1]) && islower(s[s.size()-1]) && count==1 && countc==1) cout << "AC";
  else cout << "WA";
  return 0;
}