import java.io.InputStreamReader;
import java.io.IOException;
import java.io.BufferedReader;

public class Converter {
    public static void main (String args[]) {
        BufferedReader in = new BufferedReader(new InputStreamReader( System.in ));
        String line;
        try {
            while ((line = in.readLine()) != null)
                try {
                    double celsius = new Double(line).doubleValue();
                    System.out.println("\t"+ ( 9*celsius / 5 + 32 ));
                } catch (NumberFormatException nfe) {
                    System.err.println( nfe+": "+line);
                }
        } catch (IOException e) {
            System.err.println(e);
        }
    }
}