#include<stdio.h>
#include<string.h>
int main()
{
	char s[15];
	scanf("%s",&s);
	int n=strlen(s);
	int f=1;
	if(s[0]!='A')
	f=0;
	if(s[1]=='C'||s[n-1]=='C')
	f=0;
	int sumc=0,sumall=0;

	for(int i=1;i<n;i++)
	{
		if(s[i]=='C')
		sumc++;
		if(s[i]>='A'&&s[i]<='B'||s[i]>='D'&&s[i]<='Z')
		sumall++;
	}
	if(f==1&&sumc==1&&sumall==0)
	printf("AC");
	else
	printf("WA");
}
### Prompt

Construct a CPP code solution to the problem outlined:

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<stdio.h>
#include<string.h>
int main()
{
	char s[15];
	scanf("%s",&s);
	int n=strlen(s);
	int f=1;
	if(s[0]!='A')
	f=0;
	if(s[1]=='C'||s[n-1]=='C')
	f=0;
	int sumc=0,sumall=0;

	for(int i=1;i<n;i++)
	{
		if(s[i]=='C')
		sumc++;
		if(s[i]>='A'&&s[i]<='B'||s[i]>='D'&&s[i]<='Z')
		sumall++;
	}
	if(f==1&&sumc==1&&sumall==0)
	printf("AC");
	else
	printf("WA");
}
```