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;
char s[20];
int main() {
//	freopen("1.txt","r",stdin);
	scanf("%s",s);
	int n=strlen(s),cnt=0;
	int ans=1;
	if (s[0]!='A') ans=0;
	for (int i=1;i<n;i++)
		if (s[i]=='C'&&i!=n-1&&i!=1) cnt++;
		else if ('a'<=s[i]&&s[i]<='z'); else ans=0;
	if (cnt!=1) ans=0;
	if (ans) printf("AC\n"); else printf("WA\n");
	return 0;
}