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

int main() {
	int a,b,n,T,cas=0;
	string str;
	cin>>str;
	if(str[0] != 'A') return cout<<"WA", 0;
	int cnt=0;
	for(int i=2;i<str.size()-1;++i) {
		if(str[i]=='C') cnt++;
	}
	if(cnt!=1) return cout<<"WA", 0;
	for(int i=1;i<str.size();++i) {
		if(str[i]=='C') continue;
		if(isupper(str[i])) return cout<<"WA", 0;
	}
	return cout<<"AC", 0;
}