/* 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 [] deviceNames = {"/dev/sdf", "xvdx", "xvdw", "xvdv", "xvdu", "/dev/sdk", "/dev/sda1"};
		Arrays.sort(deviceNames);
		for( int i = 0; i < deviceNames.length; i++ )
			System.out.println(deviceNames[i]);
	}
}

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