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<iostream>
#include<cstring>
using namespace std;
int b[27];
int main()
{
	char a[1005];
	cin>>a;
	int count1=0;
	for(int i=0;i<strlen(a);i++)
	{if(a[i]>='A'&&a[i]<='Z')
	{count1++;
	b[a[i]-'A']++;
	}
	}
	if(b[0]==1&&b[2]==1&&a[strlen(a)-1]!='C'&&count1==2&&a[0]=='A'&&a[1]!='C')
	cout<<"AC";
	else cout<<"WA";
	return 0;
	}