import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
      //  System.out.println("Hello world!");

        // BEGINNER CONTEST || 

    //----------------------------------------------------------------------------------------------------------------------
        // Q1. Take a decimal number N from user and print its integral part only.
        
        // Scanner scn = new Scanner(System.in);
        // double N = scn.nextDouble();
        // int integral = (int)N;
        // System.out.println(integral);
        
    //----------------------------------------------------------------------------------------------------------------------
        // Q2. Rahul bought a bike and now he has to bring it back for his first service.
        // Condition for first service:  odometer Reading > = 500 or time > = 3 months.
        // Input value only integers.
        // output : if condition is met, eligible for service - "Eligible for service", else "Not eligible for service"

        // Scanner scn = new Scanner(System.in);
        // int reading = scn.nextInt();
        // int time = scn.nextInt();

        // if(reading>=500 || time>=3){
        //        System.out.println("Eligible for service");
        //  }else {
        //        System.out.println("Not eligible for serivce");
        //         }
        
    //----------------------------------------------------------------------------------------------------------------------
         // Q3. Given subject name of a student and marks achieved in that subject.
         // print statement as "Marks in SubjectName is MarksAchieve".
         // where SubjectName and MarksAchieve is given from user.
         // Constraints: 0 < marks < 1000
         // Input format: First line take subjectname as input. second line take marks as input.
         // Output format: "Marks in SubjectName is Marksachieve". SubjectName is single word.

        // Scanner scn = new Scanner(System.in);
        // String SubjectName = scn.next();
        // int MarksAchieve = scn.nextInt();

        // if(MarksAchieve>0&&MarksAchieve<=1000){
        // System.out.print("Marks in " + SubjectName + " is " + MarksAchieve);
        // }
            
    //----------------------------------------------------------------------------------------------------------------------
        // Q4. Permission or rejection for constructions based on the zone, height of construction is subject to zone category.
        // 0 < = zone < = 1000 || input for zone as an integer ||
        // output if permitted - "Maximum height possible for building is height meters"
        // output if rejected - "Here construction is prohibited".

        Scanner scn = new Scanner(System.in);
        int zone = scn.nextInt();

       //  if(zone>0&&zone<=1000){
       //      if(zone>=1&&zone<=5){
       //          System.out.println("Maximum height possible for building is 30 meters");
       //      }else if(zone>=6&&zone<=10){
       //          System.out.println("Maximum height possible for building is 25 meters");
       //      }else if(zone>=11&&zone<=15){
       //          System.out.println("Maximum height possible for building is 20 meters");
       //      }else if(zone>=16&&zone<=20){
       //          System.out.println("Maximum height possible for building is 10 meters");
       //      }else{
       //      System.out.println("Here construction is prohibited");
       //      }
       // }
  }
}