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 <bits/stdc++.h>
using namespace std;
 typedef long long ll;


int main(){
string S;
cin >>S;
int lo = S.size();
string ans = "AC";

if(S[0]!='A')ans = "WA";
    int count = 0;
for(int i = 1; i < lo; i++){
if(isupper(S[i])){
if(i==1 || i==lo-1 || S[i]!='C') ans = "WA";
count++;
}






}
if(count!=1)ans="WA";

cout<<ans<<endl;

}
