using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Text;
class Program
{
static void Main()
{
var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
var sc = new Scan();
var sumsg = new Segtree<int>(200001, (i, j) => i + j, 0);
int q = sc.Int, t, x;
for (int i = 0; i < q; i++)
{
sc.Multi(out t, out x);
if (t == 1)
{
sumsg.update(x, 1);
continue;
}
int l = 0, r = 200001, m = 0;
while (l <= r)
{
m = (l + r) >> 1;
var a = sumsg.run(0, m);
if (a == x && sumsg.look(m) == 1)
break;
if (a >= x)
r = m - 1;
else
l = m + 1;
}
sw.WriteLine(m);
sumsg.update(m, 0);
}
sw.Flush();
}
}
class Scan
{
public int Int { get { return int.Parse(Console.ReadLine().Trim()); } }
public long Long { get { return long.Parse(Console.ReadLine().Trim()); } }
public string Str { get { return Console.ReadLine().Trim(); } }
public int[] IntArr { get { return Console.ReadLine().Trim().Split().Select(int.Parse).ToArray(); } }
public int[] IntArrWithSep(char sep) { return Console.ReadLine().Trim().Split(sep).Select(int.Parse).ToArray(); }
public long[] LongArr { get { return Console.ReadLine().Trim().Split().Select(long.Parse).ToArray(); } }
public double[] DoubleArr { get { return Console.ReadLine().Split().Select(double.Parse).ToArray(); } }
public string[] StrArr { get { return Console.ReadLine().Trim().Split(); } }
public void Multi(out int a, out int b) { var arr = IntArr; a = arr[0]; b = arr[1]; }
public void Multi(out int a, out int b, out int c) { var arr = IntArr; a = arr[0]; b = arr[1]; c = arr[2]; }
public void Multi(out int a, out int b, out int c, out int d) { var arr = IntArr; a = arr[0]; b = arr[1]; c = arr[2]; d = arr[3]; }
public void Multi(out int a, out string b) { var arr = StrArr; a = int.Parse(arr[0]); b = arr[1]; }
public void Multi(out string a, out int b) { var arr = StrArr; a = arr[0]; b = int.Parse(arr[1]); }
public void Multi(out int a, out int b, out string c) { var arr = StrArr; a = int.Parse(arr[0]); b = int.Parse(arr[1]); c = arr[2]; }
public void Multi(out int a, out char b) { var arr = StrArr; a = int.Parse(arr[0]); b = arr[1][0]; }
public void Multi(out char a, out int b) { var arr = StrArr; a = arr[0][0]; b = int.Parse(arr[1]); }
public void Multi(out long a, out long b) { var arr = LongArr; a = arr[0]; b = arr[1]; }
public void Multi(out long a, out int b) { var arr = LongArr; a = arr[0]; b = (int)arr[1]; }
public void Multi(out int a, out long b) { var arr = LongArr; a = (int)arr[0]; b = arr[1]; }
public void Multi(out string a, out string b) { var arr = StrArr; a = arr[0]; b = arr[1]; }
}
class Segtree<T>
{
int n;
T[] tree;
Func<T, T, T> f;
T exnum;
public Segtree(int m, Func<T, T, T> f, T ex)
{
this.f = f;
this.exnum = ex;
n = 1;
while (n < m) n <<= 1;
tree = new T[(n << 1) - 1];
}
public Segtree(int m, T ini, Func<T, T, T> f, T ex)
{
this.f = f;
this.exnum = ex;
n = 1;
while (n < m) n <<= 1;
tree = new T[(n << 1) - 1];
for (int i = 0; i < m; ++i) update(i, ini);
}
public void update(int j, T x)
{
int i = j + n - 1;
tree[i] = x;
while (i > 0)
{
i = (i - 1) >> 1;
tree[i] = f(tree[(i << 1) + 1], tree[(i << 1) + 2]);
}
}
public T look(int i)
{
return tree[i + n - 1];
}
// [s, t]
public T run(int s, int t)
{
return query(s, t + 1, 0, 0, n);
}
T query(int s, int t, int k, int l, int r)
{
if (r <= s || t <= l) return exnum;
if (s <= l && r <= t) return tree[k];
return f(query(s, t, (k << 1) + 1, l, (l + r) >> 1), query(s, t, (k + 1) << 1, (l + r) >> 1, r));
}
}