import java.util.Scanner;
public class prateekSirAndCoding {
static Scanner s = new Scanner(System.in);
public static void main(String args[]) throws Exception {
// Your Code Here
int t=s.nextInt();
for(int i=0;i<t;i++)
{
int q = s.nextInt();
prateekSirAndCoding obj = new prateekSirAndCoding();
StacksUsingArrays stack = obj.new StacksUsingArrays();
Calculate(stack, q);
}
}
public static void Calculate(StacksUsingArrays stack, int q) throws Exception {
if(q==2)
{
int n = s.nextInt();
stack.push(n);
}
if(q==1)
System.out.println(stack.pop());
}
private class StacksUsingArrays {
private int[] data;
private int tos;
public static final int DEFAULT_CAPACITY = 10;
public StacksUsingArrays() throws Exception {
// TODO Auto-generated constructor stub
this(DEFAULT_CAPACITY);
}
public StacksUsingArrays(int capacity) throws Exception {
if (capacity <= 0) {
System.out.println("Invalid Capacity");
}
this.data = new int[capacity];
this.tos = -1;
}
public int size() {
return this.tos + 1;
}
public boolean isEmpty() {
if (this.size() == 0) {
return true;
} else {
return false;
}
}
public void push(int item) throws Exception {
if (this.size() == this.data.length) {
int[] temp = new int[2 * data.length];
for(int i = 0;i < data.length;i++){
temp[i] = data[i];
}
data = temp;
}
this.tos++;
this.data[this.tos] = item;
}
public int pop() throws Exception {
if (this.size() == 0) {
throw new Exception("Stack is Empty");
}
int retVal = this.data[this.tos];
this.data[this.tos] = 0;
this.tos--;
return retVal;
}
public int top() throws Exception {
if (this.size() == 0) {
throw new Exception("Stack is Empty");
}
int retVal = this.data[this.tos];
return retVal;
}
public void display() throws Exception {
if (this.size() == 0) {
throw new Exception("Stack is Empty");
}
for (int i = this.tos; i >= 0; i--) {
System.out.println(this.data[i]);
}
}
}
}