#include<bits/stdc++.h>
using namespace std;
int n,op,x,v[200005],dv;
multiset<int> heap;
int main()
{
    freopen("heapuri.in","r",stdin);
    freopen("heapuri.out","w",stdout);
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
    {
        scanf("%d",&op);
        if(op==1)
        {
            scanf("%d",&x);
            heap.insert(x);
            v[++dv]=x;
        }
            else
        if(op==2)
        {
            scanf("%d",&x);
            heap.erase(v[x]);
        }
            else
        {
            printf("%d\n",*heap.begin());
        }
    }
    return 0;
}