#include <bits/stdc++.h>
using namespace std;
int main() {
    string S;
    cin >> S;
    int N = S.size();
    
    string ans = "AC";
    int C = 0;
    int capital = 0;
    for(int i = 0; i < N; i++) {
        if(2<=i && i<=N-2 && S.at(i)=='C') C++;
        if(S.at(i)<97) capital++;
    }
    if(S.at(0)!='A' || C!=1 || capital!=2) ans = "WA";
    cout << ans << endl;
}

### 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 N = S.size();
    
    string ans = "AC";
    int C = 0;
    int capital = 0;
    for(int i = 0; i < N; i++) {
        if(2<=i && i<=N-2 && S.at(i)=='C') C++;
        if(S.at(i)<97) capital++;
    }
    if(S.at(0)!='A' || C!=1 || capital!=2) ans = "WA";
    cout << ans << endl;
}

```