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>
#include <string>
using namespace std;
int main()
{
int l=0,f=0,a=0;
string S;
cin >> S;
for(int i=0;i<S.size();i++){
    if(islower(S[i])){
        l++;
    }
}
for(int j=2;j<S.size()-1;j++){
    if(S[j]=='C'){
        f++;
    }
}
if((S[a]!='A') || (f==0) || (f>1) || (l!=S.size()-2))
    cout<<"WA";
else
    cout<<"AC";
    return 0;
}
