#include <bits/stdc++.h> 

using namespace std;  


int main() { 
string s;
cin>>s;

bool f=true;
if(s[0]!='A')f=false;
int k=-1;
for(int i=2;i<s.length()-1;++i){
if(s[i]=='C')k=i;
}
if(k==-1)f=false;
for(int i=1;i<s.length();++i){
if(isupper(s[i])&&i!=k){
f=false;
}

}

if(f)cout<<"AC"<<endl;
else{cout<<"WA"<<endl;}


 return 0; 
}

### 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 f=true;
if(s[0]!='A')f=false;
int k=-1;
for(int i=2;i<s.length()-1;++i){
if(s[i]=='C')k=i;
}
if(k==-1)f=false;
for(int i=1;i<s.length();++i){
if(isupper(s[i])&&i!=k){
f=false;
}

}

if(f)cout<<"AC"<<endl;
else{cout<<"WA"<<endl;}


 return 0; 
}

```