#include<iostream>
using namespace std;
int main(){
	string s;
int sum=0;
cin>>s;
if(s[0]!='A'||isupper(s[1])||isupper(s.back())){cout<<"WA";return 0;}
for(int i=2;i<s.size()-1;i++){
if(s[i]=='C')
sum++;
if(s[i]!='C' && isupper(s[i])){cout<<"WA";return 0;}
}
cout<<((sum==1)?"AC":"WA");
	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<iostream>
using namespace std;
int main(){
	string s;
int sum=0;
cin>>s;
if(s[0]!='A'||isupper(s[1])||isupper(s.back())){cout<<"WA";return 0;}
for(int i=2;i<s.size()-1;i++){
if(s[i]=='C')
sum++;
if(s[i]!='C' && isupper(s[i])){cout<<"WA";return 0;}
}
cout<<((sum==1)?"AC":"WA");
	return 0;
}

```