#include<iostream>
#include<algorithm>
using namespace std;

int main(){
    string s;cin>>s;
    string ans="AC";
    
    if(s[0]!='A') ans="WA";

    int count=0;
    for(int i=1;i<s.size();i++)if(isupper(s[i])){
        if(i==1||i==s.size()-1||s[i]!='C') ans="WA";
        if(s[i]=='C') count++;
    }

    if(count!=1) ans="WA";

    cout<<ans<<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<iostream>
#include<algorithm>
using namespace std;

int main(){
    string s;cin>>s;
    string ans="AC";
    
    if(s[0]!='A') ans="WA";

    int count=0;
    for(int i=1;i<s.size();i++)if(isupper(s[i])){
        if(i==1||i==s.size()-1||s[i]!='C') ans="WA";
        if(s[i]=='C') count++;
    }

    if(count!=1) ans="WA";

    cout<<ans<<endl;
}
```