import java.util.Scanner;
import java.util.regex.Pattern;
public final class Main {
public static void main
(final String[] argv
) { final Scanner input
= new Scanner
(System.
in); final Pattern pattern = Pattern.compile("\\d+\\.\\d{2}?");
while (input.hasNext()) {
System.
out.
println((input.
hasNext(pattern
) ? "good" : "bad") + ": " + input.
nextDouble()); }
}
}
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