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

int main() {
    string s;
    cin>>s;
    int a=s[0]=='A',c=0,u=0;
    for (int i=1;i<s.size();i++) {
        if (2<=i&&i<=s.size()-2&&s[i]=='C')
            c++;
        else
            u+=isupper(s[i]);
    }
    if (a&&c==1&&u==0)
        puts("AC");
    else
        puts("WA");
    return 0;
}
### 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;
typedef long long ll;

int main() {
    string s;
    cin>>s;
    int a=s[0]=='A',c=0,u=0;
    for (int i=1;i<s.size();i++) {
        if (2<=i&&i<=s.size()-2&&s[i]=='C')
            c++;
        else
            u+=isupper(s[i]);
    }
    if (a&&c==1&&u==0)
        puts("AC");
    else
        puts("WA");
    return 0;
}
```