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 ok = S[0] == 'A';
    int cnt = 0;
    for (int i = 1; i < S.size(); i++) {
        if (i < 2 || i + 1 == S.size()) ok &= !!islower(S[i]);
        else if (S[i] == 'C') cnt++;
        else ok &= !!islower(S[i]);
    }
    ok &= cnt == 1;
    cout << (ok ? "AC" : "WA") << endl;
}