#include <bits/stdc++.h>
using namespace std;

int main () {
  string S;
  cin >> S;
  int s = S.size();
  string ans = "AC";
  if (S.at(0) != 'A') ans = "WA";
  int cnt = 0;
  for (int i = 1; i < s; i++) {
    if (isupper(S.at(i))) {
      if (i == 1 || i == s-1 || S.at(i) != 'C') ans = "WA";
      else cnt++;
    }
  }
  if (cnt != 1) ans = "WA";
  cout << ans << endl;
}
### Prompt

In CPP, your task is to solve 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 <bits/stdc++.h>
using namespace std;

int main () {
  string S;
  cin >> S;
  int s = S.size();
  string ans = "AC";
  if (S.at(0) != 'A') ans = "WA";
  int cnt = 0;
  for (int i = 1; i < s; i++) {
    if (isupper(S.at(i))) {
      if (i == 1 || i == s-1 || S.at(i) != 'C') ans = "WA";
      else cnt++;
    }
  }
  if (cnt != 1) ans = "WA";
  cout << ans << endl;
}
```