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

int main() {
    string S;
    cin >> S;

    bool ok = (S[0] =='A');
    int cnt = 0, N = S.size();
    for (int i = 1; i < N; i++) {
        if (2 <= i && i <= N - 2 && S[i] == 'C') cnt++;
        else if (S[i] < 'a' || 'z' < S[i]) ok = false;
    }

    if (ok && cnt == 1) cout << "AC" << endl;
    else cout << "WA" << endl;
}
### Prompt

Create a solution in Cpp for 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;

    bool ok = (S[0] =='A');
    int cnt = 0, N = S.size();
    for (int i = 1; i < N; i++) {
        if (2 <= i && i <= N - 2 && S[i] == 'C') cnt++;
        else if (S[i] < 'a' || 'z' < S[i]) ok = false;
    }

    if (ok && cnt == 1) cout << "AC" << endl;
    else cout << "WA" << endl;
}
```