import java.util.*;

public class school{
 public static void main(String[] args){
  Scanner cin=new Scanner(System.in);
  while(cin.hasNext()) {
   int h=cin.nextInt();
   int m=cin.nextInt();
   if(h>=0&&h<7&&m>=00&&m<=59)
   System.out.println("off School");
   if(h==7&&m>=00&&m<30)
   System.out.println("off School");
   if(h==7&&m>=30&&m<=59)
   System.out.println("At School");
   if(h>7&&h<17&&m>=00&&m<=59)
   System.out.println("At School");
   if(h>=17&23>=h&&m>=00&&m<=59)
   System.out.println("off School");
   else
   break;
  }
 }
}