#include <bits/stdc++.h>
using namespace std;

int main(){
  string s;
  cin>>s;
  bool ans=true;
  int cnt=0;
  for(int i=0;i<s.size();i++){
    if(isupper(s[i])) cnt++;
  }
  if(cnt!=2) ans=false;
  cnt=0;
  if(s[0]!='A') ans=false;
  for(int i=2;i<s.size()-1;i++){
    if(s[i]=='C') cnt++;
  }
  if(cnt!=1) ans=false;
  if(ans) 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;
  bool ans=true;
  int cnt=0;
  for(int i=0;i<s.size();i++){
    if(isupper(s[i])) cnt++;
  }
  if(cnt!=2) ans=false;
  cnt=0;
  if(s[0]!='A') ans=false;
  for(int i=2;i<s.size()-1;i++){
    if(s[i]=='C') cnt++;
  }
  if(cnt!=1) ans=false;
  if(ans) cout<<"AC"<<endl;
  else cout<<"WA"<<endl;
}

```