#include<bits/stdc++.h>
using namespace std;
int main(){
	string s;
	cin>>s;
	bool ok=true,tmp=false;
	for(int i=1;i<s.size();i++){
		if(!tmp&&s[i]=='C')
			tmp=true;
		else
			ok&=bool(islower(s[i]));
	}
	ok&=s[0]=='A'&&s[1]!='C'&&s[s.size()-1]!='C'&&tmp;
	cout<<(ok?"AC":"WA")<<endl;
}

### Prompt

Create a solution in Cpp for 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 ok=true,tmp=false;
	for(int i=1;i<s.size();i++){
		if(!tmp&&s[i]=='C')
			tmp=true;
		else
			ok&=bool(islower(s[i]));
	}
	ok&=s[0]=='A'&&s[1]!='C'&&s[s.size()-1]!='C'&&tmp;
	cout<<(ok?"AC":"WA")<<endl;
}

```