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<stdio.h>
#include<string.h>
int main(){
  int l,c=0;
  char s[100];
  scanf("%s",s);
  l=strlen(s);
  if(s[0]=='A' && s[l-1]>='a' && s[l-1]<='z' && s[1]>='a' && s[1]<='z'){
    for(int i=2;i<=l-2;i++){
      if(s[i]=='C') c++;
    }
    if(c==1) puts("AC");
    else puts("WA");
  }
    else puts("WA");
    return 0;
}
