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() {
    string s;
    cin >> s;
    bool a = s[0] == 'A';
    bool c = count(begin(s) + 2, end(s) - 1, 'C') == 1;
    s[0] = 'a', *find(begin(s) + 2, end(s) - 1, 'C') = 'c';
    bool small = all_of(begin(s), end(s), ::islower);

    cout << (a && c && small ? "AC" : "WA") << endl;
}
