#include<stdio.h>
int a[200005], b[200005];
int next[200005], id;
int main()
{
	int n;
	scanf("%d", &n);
	int i, j;
	for (i = 0; i < n; i++)
		scanf("%d %d", &a[i], &b[i]);
	for (i = 0; i < n; i++)
		next[i] = -1;
	id = -1;
	for (i = 0; i < n; i++)
	{
		if (b[i] == 2)
		{
			id = i;
			continue;
		}
		if (b[i] == 1)
		{
			next[i] = id;
		}
		if (a[i] == 1)
		{
			next[i + 1] = i;
			continue;
		}
		for (j = i; j >= 0; j = next[j])
			printf("%d\n", j + 1);
	}
	return 0;
}