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

int main() {
  string s; cin >>s;
  string ans = "AC";
  if (s.at(0)!='A') ans = "WA";
  if (s.at(1)<'a' || s.at(s.size()-1)<'a') ans = "WA";
  int cnt = 0;
  for (int i=2; i<s.size()-1; i++){
    if (s.at(i) == 'C') cnt++;
    else if (s.at(i) < 'a') ans = "WA";
  }
  if (cnt!=1) ans = "WA";
  cout <<ans;
  cout <<endl;
}

### Prompt

Please provide a cpp coded solution 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;

int main() {
  string s; cin >>s;
  string ans = "AC";
  if (s.at(0)!='A') ans = "WA";
  if (s.at(1)<'a' || s.at(s.size()-1)<'a') ans = "WA";
  int cnt = 0;
  for (int i=2; i<s.size()-1; i++){
    if (s.at(i) == 'C') cnt++;
    else if (s.at(i) < 'a') ans = "WA";
  }
  if (cnt!=1) ans = "WA";
  cout <<ans;
  cout <<endl;
}

```