#include<bits/stdc++.h>
using namespace std;
int main(){
  string s;
  cin >> s;
  cout << (s[0]!='A' || count(s.begin()+2,s.end()-1,'C')!=1 || count_if(s.begin(),s.end(),[](char ch){return 'A'<=ch && ch<='Z';})!=2 ? "WA" : "AC") << endl;
  return 0;
}
### Prompt

Please formulate a cpp solution 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<bits/stdc++.h>
using namespace std;
int main(){
  string s;
  cin >> s;
  cout << (s[0]!='A' || count(s.begin()+2,s.end()-1,'C')!=1 || count_if(s.begin(),s.end(),[](char ch){return 'A'<=ch && ch<='Z';})!=2 ? "WA" : "AC") << endl;
  return 0;
}
```