#include <iostream>
#include <cstdio>
#include <set>
#include <vector>
using namespace std;
vector <int > ist;
int n,a[100],k;
int main()
{
    freopen("heapuri.in","r",stdin);
    freopen("heapuri.out","w",stdout);
    multiset <int> my_set ;
    scanf("%d",&n);
    int x;
    for(int i=0; i<n; i++)
    {
        scanf("%d",&x);
        if(x==1)
        {
        scanf("%d",&x);
            my_set.insert(x);
            ist.push_back(x);
        }
        else if(x==2)
        {
            scanf("%d",&x);
            my_set.erase(ist[x-1]);
        }
        else
            printf("%d\n",*my_set.begin());


    }
    return 0;
}