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;

char s[110];
int cnt1;

int main()
{
    scanf("%s",s+1);
    int ss=strlen(s+1);
    if(s[1]!='A') return puts("WA"),0;
    for(int i=3;i<=ss-1;i++) cnt1+=s[i]=='C';
    if(cnt1!=1) return puts("WA"),0;
    for(int i=1;i<=ss;i++) if(isupper(s[i])&&(s[i]!='C'&&s[i]!='A')) return puts("WA"),0;
    puts("AC");
}