#include<iostream>
using namespace std;

int main()
{
  string s;
  string ans = "AC";
  cin >> s;

  int cnt = 0;

  if(s[0] != 'A') ans = "WA";

  for(int i = 1; i < s.size(); i++){
    if(isupper(s[i])){
      if(i == 1 || i == s.size()-1 || s[i] != 'C'){
        ans = "WA";
      }
      cnt++;
    }
  }

  if(cnt != 1) ans = "WA";

  cout << ans << 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<iostream>
using namespace std;

int main()
{
  string s;
  string ans = "AC";
  cin >> s;

  int cnt = 0;

  if(s[0] != 'A') ans = "WA";

  for(int i = 1; i < s.size(); i++){
    if(isupper(s[i])){
      if(i == 1 || i == s.size()-1 || s[i] != 'C'){
        ans = "WA";
      }
      cnt++;
    }
  }

  if(cnt != 1) ans = "WA";

  cout << ans << endl;

  return 0;

}

```