/* 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
	{
		// your code goes here
		Map<Integer, int[]> map = new HashMap<>();
		map.put(1, new int[] {1, 2});
		map.put(2, new int[]{2, 3});
 
		int[] arr = map.get(2);
		arr[1] = 10;
 
		for (Map.Entry<Integer, int[]> kv : map.entrySet()) {
			System.out.print(kv.getKey() + " : ");
			for (int i = 0; i < kv.getValue().length; i++) {
				System.out.print(kv.getValue()[i] + ", ");
			}
			System.out.println();
		}
	}
}

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