import java.io.*;
import java.util.*;
public class stktst {
public static void main(String [] args)
{
// Make a stack of Integers.
Stack<Integer> is = new Stack<>(30);
System.out.print("Enter integers to -1:\n> ");
BufferedReader bufferedReader = new BufferedReader
(new InputStreamReader(System.in));
try {
int n = Integer.parseInt(bufferedReader.readLine().trim());
while(n != -1) {
is.push(n);
System.out.print("> ");
n = Integer.parseInt(bufferedReader.readLine().trim());
}
} catch(IOException e) {
}
while(!is.empty())
System.out.print(is.pop() + " ");
System.out.println();
// Make a stack of strings.
Stack<String> ss = new Stack<>(50);
System.out.print("Enter lines to blank:\n> ");
try {
String s = bufferedReader.readLine();
while(!s.equals("")) {
ss.push(s);
System.out.print("> ");
s = bufferedReader.readLine();
}
} catch(IOException e) {
}
System.out.println();
while(!ss.empty())
System.out.println(ss.pop() + " ");
}
}