#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int main(){
	int n,i,j=0;
	string s;
	cin>>s;
	n=s.size();
	if(s[0]!='A'){
		cout<<"WA"<<endl;
		return 0;
	}
	for(i=2;i<n-1;i++)
			if(s[i]=='C')j++;
	if(j!=1){
		cout<<"WA"<<endl;
		return 0;
	}
	for(i=1;i<n;i++)
	if(s[i]>='A'&&s[i]<='Z')j++;
	if(j>2)cout<<"WA"<<endl;
	else cout<<"AC"<<endl;
	return 0;
}


### Prompt

Please formulate 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>
#include<cstdio>
#include<cstring>
using namespace std;
int main(){
	int n,i,j=0;
	string s;
	cin>>s;
	n=s.size();
	if(s[0]!='A'){
		cout<<"WA"<<endl;
		return 0;
	}
	for(i=2;i<n-1;i++)
			if(s[i]=='C')j++;
	if(j!=1){
		cout<<"WA"<<endl;
		return 0;
	}
	for(i=1;i<n;i++)
	if(s[i]>='A'&&s[i]<='Z')j++;
	if(j>2)cout<<"WA"<<endl;
	else cout<<"AC"<<endl;
	return 0;
}


```