#include<bits/stdc++.h>
using namespace std;
int main(){
  string S;cin>>S;
  int n=S.size(),countlow=0,countC=0;
  if(S[0]!='A')cout<<"WA"<<endl;
  else{
    for(int i=1;i<n;i++){
      if('a'<=S[i] && S[i]<='z')countlow++;
      if(2<=i && i<=n-2 && S[i]=='C')countC++;
    }
    if(countlow==n-2 and countC==1)cout<<"AC"<<endl;
    else cout<<"WA"<<endl;
  }
}
### Prompt

Generate 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;
  int n=S.size(),countlow=0,countC=0;
  if(S[0]!='A')cout<<"WA"<<endl;
  else{
    for(int i=1;i<n;i++){
      if('a'<=S[i] && S[i]<='z')countlow++;
      if(2<=i && i<=n-2 && S[i]=='C')countC++;
    }
    if(countlow==n-2 and countC==1)cout<<"AC"<<endl;
    else cout<<"WA"<<endl;
  }
}
```