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

int main(){
	string s;
	cin >> s;
	int cnt = 0;
	if(s[0] != 'A'){
		cout << "WA";
		return 0;
	}
	else{
		for(int i = 1; i < s.size(); ++i){
			if(isupper(s[i])){
				if(i == 1 || i == s.size() - 1 || s[i] != 'C'){
					cout << "WA";
					return 0;
				}
				++cnt;
			}
		}
	}
	if(cnt != 1) cout << "WA";
	else cout << "AC";
}

### Prompt

Please formulate 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 <bits/stdc++.h>
using namespace std;

int main(){
	string s;
	cin >> s;
	int cnt = 0;
	if(s[0] != 'A'){
		cout << "WA";
		return 0;
	}
	else{
		for(int i = 1; i < s.size(); ++i){
			if(isupper(s[i])){
				if(i == 1 || i == s.size() - 1 || s[i] != 'C'){
					cout << "WA";
					return 0;
				}
				++cnt;
			}
		}
	}
	if(cnt != 1) cout << "WA";
	else cout << "AC";
}

```