#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)

int main() {
	string S,r="AC";
	cin >> S;

	if(S.at(0)!='A' || S.at(1)<'a')
		r = "WA";
	else {
		int c=0;
		rep(i,S.size()-2) {
			if(S.at(i+2) == 'C')
				c++;
			else if(S.at(i+2)<'a')
				r = "WA";
		}
		if(c!=1 || S.at(S.size()-1)<'a')
			r = "WA";
	}

	cout << r << endl;
}
### 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 <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)

int main() {
	string S,r="AC";
	cin >> S;

	if(S.at(0)!='A' || S.at(1)<'a')
		r = "WA";
	else {
		int c=0;
		rep(i,S.size()-2) {
			if(S.at(i+2) == 'C')
				c++;
			else if(S.at(i+2)<'a')
				r = "WA";
		}
		if(c!=1 || S.at(S.size()-1)<'a')
			r = "WA";
	}

	cout << r << endl;
}
```