#include <stdio.h>
# include <set>

using namespace std;
std::multiset<int> s;
int n,op,i,x,v[200110],n1;
int main()
{
    freopen("heapuri.in","r",stdin);
    freopen("heapuri.out","w",stdout);
    scanf("%d\n",&n);
    n1=0;
    for (i=1; i<=n; i++)
    {
        scanf("%d ",&op);
        if (op==1)
        {
            scanf("%d\n",&v[++n1]);
            s.insert(v[n1]);
        }
        if (op==2)
        {
            scanf("%d\n",&x);
            s.erase(s.find(v[x]));
        }
        if (op==3)
        {
            printf("%d\n",*s.begin());
        }
    }
    return 0;
}