#include <bits/stdc++.h>
using namespace std;

int main() {

string s;
cin >> s;
int flag=0;
int num=0;
if(s[0]=='A')flag++;
for(int i=2;i<(int)(s.length())-1;i++){
if(s[i]=='C'){
flag+=10;
num=i;
break;
}
}
int flag2=0;
for(int i=0;i<(int)(s.length());i++){
if(i!=0 && i!=num && !islower(s[i])){flag2=1;break;}
}
if(flag2==0 && flag==11)
cout << "AC"<<"\n";
else
cout << "WA"<<"\n";
}
### Prompt

Please provide a CPP coded solution to the problem described below:

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;
int flag=0;
int num=0;
if(s[0]=='A')flag++;
for(int i=2;i<(int)(s.length())-1;i++){
if(s[i]=='C'){
flag+=10;
num=i;
break;
}
}
int flag2=0;
for(int i=0;i<(int)(s.length());i++){
if(i!=0 && i!=num && !islower(s[i])){flag2=1;break;}
}
if(flag2==0 && flag==11)
cout << "AC"<<"\n";
else
cout << "WA"<<"\n";
}
```