/* 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
	{
		 HashMap<String, String> map = new HashMap<>();
		 map.put("vishal", "10");
	     map.put("sachin", "30");
	     map.put("vaibhav", "20");
	     if (map.containsKey("vishal")) 
	    	System.out.println(map.get("vishal123"));
	}
}

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