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(void){
  string s;
  cin>>s;
  int f(0),c(0);
  if(s[0]!='A')f++;
  size_t size=s.length();
  for(int i(2);i<size-1;i++){
    if(s[i]=='C')c++;
  }
  if(c!=1)f++;
  c=0;
  for(int i(0);i<size;i++){
    if(islower(s[i])==0)c++;
  }
  if(c!=2)f++;
  if(f==0)cout<<"AC"<<endl;
  else cout<<"WA"<<endl;
  return 0;
}