#include <iostream>
#include <cstring>
using namespace std;
int main(int argc, char *argv[])
{
	char s[100];
	int f=0,g;
	scanf("%s",s);
	for(int i=2;i<=strlen(s)-2;i++)
	{
		if(s[i]=='C'){f=1;g=i;}
	}
	if(s[0]=='A')f++;
	for(int i=1;i<strlen(s);i++)
	{
		if(i!=g)
		{
			if(s[i]>='A'&&s[i]<='Z')f=0;
		}
	}
	if(f==2)printf("AC\n");
	else printf("WA\n");
	return 0;
}
### Prompt

Your task is to create a CPP solution to the following problem:

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 <cstring>
using namespace std;
int main(int argc, char *argv[])
{
	char s[100];
	int f=0,g;
	scanf("%s",s);
	for(int i=2;i<=strlen(s)-2;i++)
	{
		if(s[i]=='C'){f=1;g=i;}
	}
	if(s[0]=='A')f++;
	for(int i=1;i<strlen(s);i++)
	{
		if(i!=g)
		{
			if(s[i]>='A'&&s[i]<='Z')f=0;
		}
	}
	if(f==2)printf("AC\n");
	else printf("WA\n");
	return 0;
}
```