import java.io.File;
 
public class Main {
 
    private static long GB  = 1000 * 1000 * 1000;
    private static long GiB = 1024 * 1024 * 1024;
 
    private static void printGB(long bytes) {
        System.out.printf("%.2f GB\n", (double) bytes / GB);
    }
 
    private static void printGiB(long bytes) {
        System.out.printf("%.2f GiB\n", (double) bytes / GiB);
    }
 
    public static void main(String[] args) {
        File[] roots = File.listRoots();
        long free_space = 0;
        for (int i = 0; i < roots.length; i++)
        	free_space += roots[i].getFreeSpace();
        printGiB(free_space);
        printGB(free_space);
    }
}

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