import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String st=sc.nextLine();
        while (!st.equals("q")){
            int t=Integer.parseInt(st);
            t=t*9/5+32;
            System.out.println(t);
            st=sc.nextLine();
        }
    }
}