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;
#define fastio() ios::sync_with_stdio(0),cin.tie(0);

int main()
{
	string s;
	cin >> s;
	int ck = 0,flag;
	flag = (s[0] == 'A');
	for (int i = 1; i < s.size(); i++)
	{
		if (i > 1 && i < s.size() - 1 && s[i] == 'C')ck++;
		else if (s[i] < 'a')
		{
			flag = false;
			break;
		}
	}
	puts(flag&&ck==1? "AC" : "WA");
	return 0;
}