/* 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
{
	static Properties props = System.getProperties();
	static Map<String,String> envs = System.getenv();
	public static void main (String[] args) throws java.lang.Exception
	{
		
		for ( Iterator it = envs.keySet().iterator(); it.hasNext(); )
		{
		     String key = (String) it.next();
		     String value = (String)envs.get(key);
		     System.out.println(key +":" +value);
		}
		props.list(System.out);
	}
}