MetricConverter

import java.util.Scanner;

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

        // read:
        //1. figure to be converted
        //2. metric for conversion
        //3. metric result

        double figure = Double.parseDouble(scanner.nextLine());
        String metricForConversion = scanner.nextLine();
        String metricResult = scanner.nextLine();

        double result = 0;


        if (metricForConversion.equals("mm") && metricResult.equals("m")) {
            result = figure / 1000;
        } else if (metricForConversion.equals("m") && metricResult.equals("mm")) {
            result = figure * 1000;
        } else if (metricForConversion.equals("m") && metricResult.equals("cm")) {
            result = figure * 100;
        } else if (metricForConversion.equals("cm") && metricResult.equals("m")) {
            result = figure / 100;
        } else if (metricForConversion.equals("cm") && metricResult.equals("mm")) {
            result = figure * 10;
        } else if (metricForConversion.equals("mm") && metricResult.equals("cm")) {
            result = figure / 10;
        }
        System.out.printf("%.3f", result);


    }
}