import java.io.*;
import java.util.*;
import javax.swing.*;
import java.util.StringTokenizer;
public class Sample {
public static int count = 0;
public static String s[]=new String[2];
public static String s2;
public static String s3;

public static void main (String args[]) throws IOException{
isRead();
}
public static void isRead()throws IOException{
int count2 = 0;

BufferedReader lnr = new BufferedReader (new FileReader("subjects.txt"));
String line;
String ask;


while ((line = lnr.readLine())!=null){
StringTokenizer st = new StringTokenizer(line);

s[count2] = st.nextToken();
count2++;

}
isInput();

}

public static void isInput() throws IOException{
FileWriter writer = new FileWriter("output.txt");
int i;
String ask = JOptionPane.showInputDialog("Enter.");

if(ask.equals(s[0])){
StringTokenizer st = new StringTokenizer(ask,s[0],true);

while(st.hasMoreTokens()){
String ask2 = st.nextToken();

if(ask2.equals("1")){
i = Integer.parseInt(ask2);

}
else if(ask2.equals("M")){
s2 = "Math17";

}


}
String semester = "\n1\n";
writer.write(semester+s2);
writer.flush();
writer.close();
isInput();
}
else if(ask.equals(s[1])){
StringTokenizer st = new StringTokenizer(ask,s[1],true);

while(st.hasMoreTokens()){
String ask2 = st.nextToken();

if(ask2.equals("2")){
i = Integer.parseInt(ask2);

}
else if(ask2.equals("I")){
s3 = "IT110";

}


}
String semester = "\n1\n";
writer.write(semester+s3);
writer.flush();
writer.close();

}




}