import java.util.Scanner;
public class Solution {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String code = sc.next();
String lastFourWords = code.substring(code.length()-4, code.length());
if(lastFourWords.equals(
"_eye"
)){
System.out.println("Ophthalmologyc");
}
else if(
lastFourWords.equals("head")
){
System.out.println("Neurosurgery");
}
else if(
lastFourWords.equals("infl")
){
System.out.println("Orthopedics");
}
else if(lastFourWords.equals("skin"))
{
System.out.println("Dermatology");
}
else
{
System.out.println("direct recommendation");
}
}
}