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<algorithm>
#include<cstring>
#include<cstdio>
using namespace std;
int main()
{char s[30];
int b,c;b=c=0;
cin>>s;
int a=strlen(s);
   for(int i=2;i<a-1;i++)
    if(s[i]=='C')b++;
    for(int i=0;i<a;i++)
        if(s[i]>='A'&&s[i]<='Z')c++;
   if(s[0]!='A'||b!=1||c!=2)cout<<"WA\n";
   else cout<<"AC\n";
    return 0;
}