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

Construct a CPP code solution to the problem outlined:

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(),count=0,check=0;
  for(int i=2;i<n-1;i++)
    if(S.at(i)=='C')count++;
  for(int i=0;i<n;i++)
    if('A'<=S.at(i) && S.at(i)<='Z')check++;
  
  if(S.at(0)!='A')count=0;
  else if(check!=2)count=0;
  
  if(count==1)cout<<"AC"<<endl;
  else cout<<"WA"<<endl;
}
```