import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println(maskPhoneNumber("+91 (333) 444-5678"));
		System.out.println(maskPhoneNumber("+1(333) 456-7890"));
	}
	public static String maskPhoneNumber(String inputPhoneNum){
        return inputPhoneNum.replaceAll("[()\\s]+", "-")
                .replaceAll("\\d(?=(?:\\D*\\d){4})", "*");
    }
}

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