java12.java

//hackerrank
//java regex problem 
//solution
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.Scanner;

class Solution{

    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 {
      String pattern;
    MyRegex() {     
        String zeroTo255 ="(\\d{1,2}|(0|1)\\d{2}|2[0-4]\\d|25[0-5])";
        pattern = zeroTo255 + "." + zeroTo255 + "." + zeroTo255 + "." + zeroTo255;

    }
}