#include <iostream>
using namespace std;
int main(){
  string s; cin >> s;
  bool ok = 1;
  if(s[0] != 'A') ok = 0;
  int res = 0;
  for(int i=2;i<=s.size()-2;i++){
    if(s[i]=='C') res++;
  }
  if(res!=1) ok = 0;
  int m = 0;
  for(int i=0;i<s.size();i++){
    if('A'<=s[i] && s[i] <= 'Z') m++;
  }
  if(m!=2) ok = 0;
  if(ok) cout << "AC";
  else cout << "WA";
}
### Prompt

Your challenge is to write 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 <iostream>
using namespace std;
int main(){
  string s; cin >> s;
  bool ok = 1;
  if(s[0] != 'A') ok = 0;
  int res = 0;
  for(int i=2;i<=s.size()-2;i++){
    if(s[i]=='C') res++;
  }
  if(res!=1) ok = 0;
  int m = 0;
  for(int i=0;i<s.size();i++){
    if('A'<=s[i] && s[i] <= 'Z') m++;
  }
  if(m!=2) ok = 0;
  if(ok) cout << "AC";
  else cout << "WA";
}
```