#include <algorithm>
#include <iostream>

using namespace std;

#define ALL(x) begin(x), end(x)

int main() {
  string S;
  cin >> S;
  bool pred =
      S[0] == 'A' && count(S.begin() + 2, S.end() - 1, 'C') == 1 &&
      all_of(S.begin()+1,S.end(), [](char c) { return (c >= 'a' && c <= 'z') || c == 'C'; });

  cout << (pred ? "AC" : "WA") << endl;

  return 0;
}

### Prompt

Please create a solution in cpp to the following problem:

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

### Response

```cpp
#include <algorithm>
#include <iostream>

using namespace std;

#define ALL(x) begin(x), end(x)

int main() {
  string S;
  cin >> S;
  bool pred =
      S[0] == 'A' && count(S.begin() + 2, S.end() - 1, 'C') == 1 &&
      all_of(S.begin()+1,S.end(), [](char c) { return (c >= 'a' && c <= 'z') || c == 'C'; });

  cout << (pred ? "AC" : "WA") << endl;

  return 0;
}

```