/* 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
	{
		Map<Character, Character[]> graph = new HashMap<Character, Character[]>();
		graph.put('i', new Character[] {'i', 'v'});
		System.out.println(graph.get('i')[0]);
		System.out.println(graph.get('i')[1]);
		System.out.println(graph.get('i').length);
	}
}

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