#include <bits/stdc++.h>
using namespace std;
int main() {
  string s; cin>>s;
  int n=0;
  for(char c:s.substr(2,s.size()-3)) if(c=='C') n++;
  if(s[0]!='A'||s[1]<'Z'+1||n!=1){cout<<"WA"; return 0;} 
  else for(char c:s.substr(2)) if(c<'Z'+1&&c!='C'){cout<<"WA"; return 0;}
  cout<<"AC";
}
### 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 <bits/stdc++.h>
using namespace std;
int main() {
  string s; cin>>s;
  int n=0;
  for(char c:s.substr(2,s.size()-3)) if(c=='C') n++;
  if(s[0]!='A'||s[1]<'Z'+1||n!=1){cout<<"WA"; return 0;} 
  else for(char c:s.substr(2)) if(c<'Z'+1&&c!='C'){cout<<"WA"; return 0;}
  cout<<"AC";
}
```