/* -*- coding: utf-8 -*-
 *
 * 3086.cc:  No.3086 Re One Two - yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* constant */

const int MAX_N = 200000;

/* typedef */

/* global variables */

int as[MAX_N], bs[MAX_N];
int ps[MAX_N];

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d", &n);
  for (int i = 0; i < n; i++) scanf("%d%d", as + i, bs + i);

  fill(ps, ps + n, -1);
  for (int i = 0, j = 0; i < n; i++) {
    if (as[i] == 1) ps[i + 1] = i;
    else if (bs[i] == 2) {
      while (bs[j] != 1) j++;
      ps[j++] = i;
    }
    else {
      for (int u = i; u >= 0; u = ps[u])
	printf("%d\n", u + 1);
    }
  }

  return 0;
}