#include <bits/stdc++.h>
using namespace std;
 
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  string S, ans="AC";
  cin >> S;
  int L = S.size();
  if(S[0] != 'A') ans = "WA";
  int cnt=0;
  for(int i=1;i<L;i++) {
    if(isupper(S[i])) {
      if(i==1 || i==L-1 || S[i] != 'C') ans="WA";
      cnt++;
    }
  }
  if(cnt!=1) ans="WA";
  cout << ans << endl; 
}
### Prompt

Develop a solution in Cpp to the problem described below:

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() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  string S, ans="AC";
  cin >> S;
  int L = S.size();
  if(S[0] != 'A') ans = "WA";
  int cnt=0;
  for(int i=1;i<L;i++) {
    if(isupper(S[i])) {
      if(i==1 || i==L-1 || S[i] != 'C') ans="WA";
      cnt++;
    }
  }
  if(cnt!=1) ans="WA";
  cout << ans << endl; 
}
```