// B - AcCepted
#include <bits/stdc++.h>
using namespace std;

int main(){
	string s; cin>>s;
	bool ok = true;
	if(s[0] != 'A') ok = false;
	if(s[1]<'a' || 'z'<s[1]) ok = false;
	if(s.back()<'a' || 'z'<s.back()) ok = false;
	int c = 0;
	for(int i=2; i<(int)s.size()-1; ++i)
		if(s[i] == 'C') c++;
	if(c != 1) ok = false;
	cout<< (ok? "AC":"WA") <<endl;
}

### Prompt

Your challenge is to write 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
// B - AcCepted
#include <bits/stdc++.h>
using namespace std;

int main(){
	string s; cin>>s;
	bool ok = true;
	if(s[0] != 'A') ok = false;
	if(s[1]<'a' || 'z'<s[1]) ok = false;
	if(s.back()<'a' || 'z'<s.back()) ok = false;
	int c = 0;
	for(int i=2; i<(int)s.size()-1; ++i)
		if(s[i] == 'C') c++;
	if(c != 1) ok = false;
	cout<< (ok? "AC":"WA") <<endl;
}

```