/* 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
	{
	 System.out.println("At 8" + testIt(-8));
	 System.out.println("At 16" + testIt(-16));
	 System.out.println("At 32" + testIt(-32));
	 System.out.println("At 64" + testIt(-64));
	 System.out.println("At 72" + testIt(-72));
	 System.out.println("At 80" + testIt(-80));
	 System.out.println("At 90" + testIt(-90));
 
	}
 
	public static char testIt(double lat)
	{
     return "CCCDEFGHJKLMNPQRSTUVWXXX".charAt((int)(Math.ceil((lat + 90)/ 8)));
    }
}

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