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()
{
    string s;
    cin >> s;

    int a = 0,b = 0,c = 3;
    if(s[0] == 'A') a++;
    for(int i = 2; i < s.length() - 1; i++) if(s[i] == 'C') b++;
    for(int i = 0; i < s.length(); i++) if(s[i] >= 'A' && s[i] <= 'Z') c--;

    cout << (a == 1 && b == 1 && c == 1 ? "AC" : "WA") << endl;

    return 0;
}