#include <cstdio>
#include <set>
using namespace std;
int i,j,n,a[200002],x,k,t;
multiset <int> s;
multiset <int>::iterator it;
int main()
{
    freopen("heapuri.in","r",stdin);
    freopen("heapuri.out","w",stdout);
    scanf("%d\n",&n);
    for(i=1; i<=n; i++)
    {
        scanf("%d",&x);
        if(x==1)
        {
            scanf("%d\n",&k);
            a[++t]=k;
            s.insert(k);
        }
        if(x==2)
        {
            scanf("%d\n",&k);
            s.erase(s.find(a[k]));
        }
        if(x==3)
        {
            it=s.begin();
            printf("%d\n",*it);
        }
    }
    return 0;
}