#include<cstdio>
#include<cstring>
int main()
{
	char s[15];
	bool f=0;
	scanf("%s",s+1);
	if(s[1] != 'A')
		puts("WA");
	else
	{
		for(int i=2;i<=strlen(s+1);i++)
		{
			if(s[i] == 'C' && i != 2 && i != strlen(s+1) && !f)
				f=1;
			else if(s[i] < 'a' && s[i] != 'A')
			{
				puts("WA");
				return 0;
			}
		}
		if(f)
			puts("AC");
		else
			puts("WA");
	}
	return 0;
}
### Prompt

Please provide a Cpp coded solution 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<cstdio>
#include<cstring>
int main()
{
	char s[15];
	bool f=0;
	scanf("%s",s+1);
	if(s[1] != 'A')
		puts("WA");
	else
	{
		for(int i=2;i<=strlen(s+1);i++)
		{
			if(s[i] == 'C' && i != 2 && i != strlen(s+1) && !f)
				f=1;
			else if(s[i] < 'a' && s[i] != 'A')
			{
				puts("WA");
				return 0;
			}
		}
		if(f)
			puts("AC");
		else
			puts("WA");
	}
	return 0;
}
```