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>
#define maxn 100010
using namespace std;

int a[maxn],n;
char s[maxn];
int main(){
	scanf("%s",s+1);
	for(int i=1;s[i];i++){
		if(s[i]!='A'&&s[i]!='C'&&s[i]>='A'&&s[i]<='Z')
			return puts("WA"),0;
	}
	if(s[1]!='A')
		return puts("WA"),0;
	int cnt=0;
	for(int i=3;s[i+1];i++)
		cnt+=s[i]=='C';
	if(cnt!=1)
		return puts("WA"),0;
	puts("AC"); 
	return 0;
}