04. Metric Converter

import java.util.Scanner;

public class MetricConverter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        double A = Double.parseDouble(scanner.nextLine());
        String B = scanner.nextLine();
        String C = scanner.nextLine();

        if (B.equals("mm")){
            A = A / 1000;
        }else if (B.equals("cm")){
            A = A / 100;
        }

        if (C.equals("mm")){
            A = A * 1000;
        }else if (C.equals("cm")){
            A = A * 100;
        }
        System.out.printf("%.3f",A);
    }
}