题解 | #整数与IP地址间的转换#

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String [] arr = in.nextLine().split("\\.");
        Long n = in.nextLong();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < arr.length; i++) {
            String s1 = Long.toBinaryString(new Long(arr[i]));
            String b = "0000000".substring(s1.length() - 1) + s1;
            sb.append(b);
        }
        System.out.println(Long.parseLong(sb.toString(), 2));
        String str = Long.toBinaryString(n);
        StringBuilder bStr = new StringBuilder(str);
        for (int i = 0; i < 32 - str.length(); i++) bStr.insert(0, '0');
        for (int i = 0; i < bStr.length(); i = i + 8) {
            String sub = bStr.substring(i, i + 8);
            if ( i == 24)
                System.out.print(Long.parseLong(sub, 2));
            else
                System.out.print(Long.parseLong(sub, 2) + ".");
        }
    }
}