#include<fstream>
#include<set>
using namespace std;
#define NMAX 200005
ifstream f("heapuri.in");
ofstream g("heapuri.out");

multiset<int> h;
int a[NMAX];
int n,nr;

int main()
{
	f>>n;
	for(int i=1;i<=n;i++)
	{
		int op,x;
		f>>op;
		switch(op)
		{
		case 1:
			++nr;
			f>>a[nr];h.insert(a[nr]);break;
		case 2:f>>x; h.erase(a[x]);break;
		case 3:g<<*h.begin()<<'\n';
		}
	}
	return 0;
}