#include <bits/stdc++.h>

using namespace std;
ifstream fin ("heapuri.in");
ofstream fout ("heapuri.out");
long long  n,i,op,v[200002],nr,j,mini=1000000002,x,fr[100000002];
int main()
{
    fin>>n;
    for(i=1; i<=n; i++)
    {
        fin>>op;
        if(op==1)
        {nr++;
            fin>>v[nr];
            if(v[nr]<mini)mini=v[nr];
            fr[v[nr]]++;
        }
        if(op==2)
        {
            fin>>x;
            if(v[x]==mini)
            {mini=1000000002;
             fr[v[x]]=0;
             for(j=1;j<1000000;j++)
                    if(fr[j]>=1){mini=j;
                                break;}
            }
            else fr[v[x]]=0;

        }
        if(op==3)
        {
            fout<<mini<<'\n';
        }

    }
}