import java.util.Scanner;

public class Main {

    static int toF(int t){
        return t*9/5+32;
    }
    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);
            System.out.println(toF(t));
            st=sc.nextLine();
        }
    }

}