/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
import java.time.* ;
 
/* 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
	{
        OffsetDateTime now = OffsetDateTime.now( ZoneOffset.UTC );
        Period p = Period.ofYears( 1 );
        OffsetDateTime then = now.minus( p );
 
        System.out.println( "now = " + now );
        System.out.println( "then = " + then );
 
        System.out.println(
                OffsetDateTime
                        .now( ZoneOffset.UTC )
                        .minus( Period.ofYears( 1 ) )
                        .toString()
        );
	}
}

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