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#include <fstream>
#define minim 1000000005
using namespace std;
ifstream fin("heapuri.in");
ofstream fout("heapuri.out");
int n,i,op,x,poz,mini,lg,j,v[200005];
int main()
{
fin >> n;
mini=minim;
for(i=1;i<=n;i++)
{
fin >> op;
if(op==1)
{
fin >> x;
if(x<mini)
mini=x;
v[++lg]=x;
}
else if(op==2)
{
fin >> poz;
x=v[poz];
v[poz]=-1;
if(x==mini)
{
mini=minim;
for(j=1;j<=lg;j++)
if(v[j]<mini && v[j]>-1)
mini=v[j];
}
}
else if(op==3)
fout << mini << '\n';
}
return 0;
}