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

int main(){
	string s;
  cin>>s;
  int a=0;
  for(int i=0;i<s.size();i++){
    if(s[i]>='A'&&s[i]<='Z')a++;
  }
  int f=0;
  for(int i=2;i<s.size()-1;i++){
    if(s[i]=='C')f=1;
  }
  
  if(a!=2||s[0]!='A'||f==0){
    cout<<"WA"<<endl;
    return 0;
  }
  cout<<"AC"<<endl;
}

### Prompt

In Cpp, your task is to solve 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 a=0;
  for(int i=0;i<s.size();i++){
    if(s[i]>='A'&&s[i]<='Z')a++;
  }
  int f=0;
  for(int i=2;i<s.size()-1;i++){
    if(s[i]=='C')f=1;
  }
  
  if(a!=2||s[0]!='A'||f==0){
    cout<<"WA"<<endl;
    return 0;
  }
  cout<<"AC"<<endl;
}

```