/* 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
	{
		Random r = new Random();
		Set<Integer> set = new HashSet<>();
		for (int i = 0; i < 1_000_000; ++i) {
			long time = r.nextLong();
 
			Calendar cal = Calendar.getInstance();
			cal.setTimeInMillis(time);
			int currentDay = cal.get(Calendar.DAY_OF_WEEK);
			set.add(currentDay);
		}
		System.out.println(set);
	}
}

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