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// This will output true or false for each IP address based on whether it matches the given pattern.

package HackerRank;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import java.util.Scanner;

class TwentySix {

public static void main(String[] args){

Scanner in = new Scanner(System.in);

while(in.hasNext()){

String IP = in.next();

System.out.println(IP.matches(new MyRegex().pattern));

}

}

}

//Write your code here

class MyRegex {

// Regular expression pattern to validate an IP address

String pattern = "^([01]?\\d{1,2}|2[0-4]\\d|25[0-5])\\.([01]?\\d{1,2}|2[0-4]\\d|25[0-5])\\.([01]?\\d{1,2}|2[0-4]\\d|25[0-5])\\.([01]?\\d{1,2}|2[0-4]\\d|25[0-5])$";

}