#include <set>
#include <cstdio>

using namespace std;
int i, A[200001], N, Nr, X, j;
multiset<int> H;
int main()
{
    freopen("heapuri.in", "r", stdin);
    freopen("heapuri.out", "w", stdout);
    scanf("%d", &N);
    for (i=1; i<=N; i++)
    {
        scanf("%d", &j);
        if (j==1)
        {
            scanf("%d", &X);
            H.insert(X);
            A[++Nr]=X;
        }
        else
        if (j==2)
        {
            scanf("%d", &X);
            H.erase( H.find(A[X]) );
        }
        else printf("%d\n", *H.begin() );
    }
    return 0;
}