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;
typedef long long ll;
int main() {
	string S;
	cin >> S;
	bool ok = 1;
	if (S[0] != 'A'||isupper(S[1])||isupper(S.back())) ok = 0;
	int cnt = 0;
	for (int i = 2; i + 1 < S.size(); i++) {
		if (S[i] == 'C') cnt++;
		else if (isupper(S[i])) ok = 0;
	}
	if (cnt != 1) ok = 0;
	if (ok) cout << "AC" << endl;
	else cout << "WA" << endl;
}