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
#include <iostream>
using namespace std;
int main()
{
    int n,x=0,i;
    string s;
    cin>>s;
    n=s.length();
    if(s[0]=='A' && s[1]>90 && s[n-1]>90){
        for(i=2;i<n-1;i++){
            if(s[i]=='C'){
                x++;
            }
        }
    }
    if(x==1)
       cout<<"AC";
    else
       cout<<"WA";
}

