#include <cstdio>
#include <set>

using namespace std;
multiset <int> h;

int a[200010],q,n,i,x,k;

int main()
{
    freopen("heapuri.in","r",stdin);
    freopen("heapuri.out","w",stdout);
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
        scanf("%d",&x);
        if(x==1)
        {   scanf("%d",&k);
            a[++q]=k;
            h.insert(k);
        }
        if(x==2)
        {
            scanf("%d",&k);
            h.erase(h.find(a[k]));
        }
        if (x==3) printf("%d\n",*(h.begin()));
    }

return 0;
}