/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.time.Instant;
import java.time.temporal.ChronoUnit;
 
/* 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
	{
		Instant now = Instant.now();
    	Instant yesterday = now.minus(1, ChronoUnit.DAYS);
    	System.out.println(now);
    	System.out.println(yesterday);
	}
}

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