#include <iostream>
#include <stdio.h>
#include <string.h>
using namespace std;
int main()
{
	char a[11];
	scanf("%s",a);
	int A,C,i;
	A=C=0;
	for(i=1;i<strlen(a);i++)
	{
		if(a[i]=='C')
			C++,A=i;
		else if(a[i]>='a' && a[i]<='z')
			;
		else
			break;
	}
	if( a[0]=='A' &&A!=strlen(a)-1 && A!=1 && C==1 && i>=strlen(a))
		printf("AC\n");
	else
		printf("WA\n");
    return 0;
}

### Prompt

Develop a solution in Cpp to the problem described below:

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

### Response

```cpp
#include <iostream>
#include <stdio.h>
#include <string.h>
using namespace std;
int main()
{
	char a[11];
	scanf("%s",a);
	int A,C,i;
	A=C=0;
	for(i=1;i<strlen(a);i++)
	{
		if(a[i]=='C')
			C++,A=i;
		else if(a[i]>='a' && a[i]<='z')
			;
		else
			break;
	}
	if( a[0]=='A' &&A!=strlen(a)-1 && A!=1 && C==1 && i>=strlen(a))
		printf("AC\n");
	else
		printf("WA\n");
    return 0;
}

```