/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String IMEI = "36529874";
		StringBuilder IMEI_convertido = new StringBuilder();
		IMEI_convertido.append(
				Integer.toHexString(Integer.parseInt(IMEI.substring(0, 2)))).
				append(".").append(
				Integer.toHexString(Integer.parseInt(IMEI.substring(2, 4)))).
				append(".").append(
				Integer.toHexString(Integer.parseInt(IMEI.substring(4, 6)))).
				append(".").append(
				Integer.toHexString(Integer.parseInt(IMEI.substring(6, 8))));
		System.out.println("IMEI: " + IMEI + "; IMEI_convertido: " + IMEI_convertido);
	}
}

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