#include<bits/stdc++.h>
using namespace std;
string st;int f=0;
int main(){
	cin>>st;f=0;
	if(st[0]!='A'){cout<<"WA"<<endl;return 0;}
	for(int i=2;i<st.length()-1;i++)if(st[i]=='C')f++;
	if(f!=1){cout<<"WA"<<endl;return 0;}
	for(int i=1;i<st.length();i++)if((st[i]<'a'||st[i]>'z')&&(st[i]!='C')){cout<<"WA"<<endl;return 0;}
	cout<<"AC"<<endl;return 0;
}
### Prompt

Your task is to create 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;
string st;int f=0;
int main(){
	cin>>st;f=0;
	if(st[0]!='A'){cout<<"WA"<<endl;return 0;}
	for(int i=2;i<st.length()-1;i++)if(st[i]=='C')f++;
	if(f!=1){cout<<"WA"<<endl;return 0;}
	for(int i=1;i<st.length();i++)if((st[i]<'a'||st[i]>'z')&&(st[i]!='C')){cout<<"WA"<<endl;return 0;}
	cout<<"AC"<<endl;return 0;
}
```