import java.util.Scanner;

class IPv4 {
    private StringBuilder mask, network, broadcast, binaryIP;

    private IPv4(String ip, int masklen) {
        mask = new StringBuilder();
        network = new StringBuilder();
        broadcast = new StringBuilder();
        binaryIP = this.binaryConversion(ip.split("\\."));
        for(int i = 0; i < 32; i++) {
            if (i < masklen) mask.append(1);
            else mask.append(0);
            if(mask.charAt(i) == '1' && binaryIP.charAt(i) == '1') network.append(1);
            else network.append(0);
            if (i < masklen) broadcast.append(network.charAt(i));
            else broadcast.append(1);
        }
    }

    private void printOut(StringBuilder str) {
        for(int i = 0; i < 4; i++) {
            System.out.print(str.substring(i*8, (i+1)*8) + '.');
            if (i != 3) System.out.print('.');
        }
        System.out.print(" / " + decimalConversion(str));
    }

    private StringBuilder decimalConversion(StringBuilder str) {
        StringBuilder decimal = new StringBuilder();
        for(int i = 0; i < 4; i++) {
            decimal.append(Integer.parseInt(str.substring(i*8, (i+1)*8), 2));
            if (i != 3) decimal.append('.');
        }
        return decimal;
    }

    private StringBuilder binaryConversion(String[] decimal) {
        if(decimal.length != 4) throw new RuntimeException("Invalid IPv4!");
        StringBuilder binary = new StringBuilder();
        for (String string : decimal) {
            int octet = Integer.parseInt(string);
            if(octet < 0 || octet > 255) throw new RuntimeException("Invalid IPv4!");
            StringBuilder binaryOctet = new StringBuilder(Integer.toBinaryString(octet));
            while (binaryOctet.length() < 8)
                binaryOctet.insert(0, "0");
            binary.append(binaryOctet.toString());
        }
        return binary;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.println("Please enter an IPv4 address in dot-decimal notation:");
        String ip = in.nextLine();
        System.out.println("Please enter a mask length:");
        int masklen = Integer.parseInt(in.nextLine());
        if(masklen < 1 || masklen > 31) throw new RuntimeException("Invalid mask length!");
        IPv4 IP = new IPv4(ip, masklen);
        System.out.println("\nAddresses in binary / dot-decimal notation:");
        System.out.print("\nIP: ");
        IP.printOut(IP.binaryIP);
        System.out.print("\nMask: ");
        IP.printOut(IP.mask);
        System.out.print("\nNetwork: ");
        IP.printOut(IP.network);
        System.out.print("\nBroadcast: ");
        IP.printOut(IP.broadcast);
    }
}