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
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main(){
	string s;
	cin >> s;
	int large = 0;
	int numc = 0;
	for(char c: s){
		if('A'<=c and c<='Z') large++;
	}
	for(int i=2; i<s.length()-1; i++){
		if(s[i]=='C') numc++;
	}
	if(s[0]=='A' and numc==1 and large==2) cout << "AC" << endl;
	else cout << "WA" << endl;
	return 0;
}