#define NMAX 200005
#include <fstream>
#include <set>
using namespace std;

ifstream f("heapuri.in");
ofstream g("heapuri.out");

int m, c, x, index;
int v[NMAX];
multiset<int> ms;


int main()
{
    f>>m;
    for(int i = 1; i <= m; ++i)
    {
        f>>c;
        if(c == 1)
        {
            f>>x;
            v[++index] = x;
            ms.insert(x);
        }
        else if(c == 2){
            f>>index;
            ms.erase(v[index]);
        }
        else g<<*ms.begin()<<'\n';
    }

    return 0;
}