import java.io.*;
import hsa.Console;
import java.util.StringTokenizer;

// The "UnicornsTeasoons" class.
public class UnicornsTeasoons
{
    public static void main (String[] args) throws IOException
    {

	// Open up the input and output file for IO purpose
	FileReader inFile = new FileReader ("DATA3.txt");
	FileWriter outFile = new FileWriter ("OUT3.txt");

	// Link the input and output file for
	BufferedReader in = new BufferedReader (inFile);
	BufferedWriter out = new BufferedWriter (outFile);

	String line;

	// Keep reading as long as not end of file (eof)
	while ((line = in.readLine ()) != null)
	{
	    String[] value = new String [4];
	    int i = 0, oz = 1, gill = 5, pt = 20, qt = 40, gal = 160;
	    int result = 0;
	    StringTokenizer words = new StringTokenizer (line);
	    while (words.hasMoreTokens ())
	    {
		value [i] = words.nextToken ();
		i++;
	    }
	    
	    int number = Integer.parseInt (value [0]);

	    if (value [1].equals ("oz"))
	    {
		result = number * oz;
	    }

	    else if (value [1].equals ("gill"))
	    {
		result = number * gill;
	    }
	    else if (value [1].equals ("pt"))
	    {
		result = number * pt;
	    }
	    else if (value [1].equals ("qt"))
	    {
		result = number * qt;
	    }
	    else if (value [1].equals ("gal"))
	    {
		result = number * gal;
	    }


	    if (value [3].equals ("oz"))
	    {
		result = result / oz;
	    }

	    else if (value [3].equals ("gill"))
	    {
		result = result / gill;
	    }
	    else if (value [3].equals ("pt"))
	    {
		result = result / pt;
	    }
	    else if (value [3].equals ("qt"))
	    {
		result = result / qt;
	    }
	    else if (value [3].equals ("gal"))
	    {
		result = result / gal;
	    }
	    String resultStr = ""+ result;
	    out.write (resultStr);
	    out.newLine();


	    out.flush ();

	}
	out.close ();


    } // main method
} // End of Class