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