#include<cstdio>
#include<cstdlib>
#include<fstream>
#include<cstring>
#include<cmath>
#include<ctime>
using namespace std;
class Cuckoo
{
    int *H,size,rand1,rand2;
    public:
        Cuckoo(int );
        int f1(int );
        int f2(int );
        int insert(int );
        void remove(int );
        int find(int );
        void hash(char[] , char[] );
};
Cuckoo::Cuckoo(int s)
{
    size=s;
    H=new int[size];
}
int Cuckoo::f1(int x)
{
    return ((long long)x*(long long)rand1)%(long long)size;
}
int Cuckoo::f2(int x)
{
    return ((long long)x*(long long)rand2)%(long long)size;
}
void Cuckoo::hash(char i[],char o[])
{
    srand(time(NULL));
    int n,op,x,rehash=0;
    do{
        ifstream in(i);
        ofstream out(o);
        fill(H,H+size,0);
        rand1=rand()%size;
        rand2=rand()%size;
        in>>n;
        for(int i=0;i<n;i++)
        {
            in>>op>>x;
            if(op==1) 
                rehash=!insert(x);
            if(op==2) remove(x);
            if(op==3) out<<find(x)<<"\n";
        }        
        in.close();
        out.close();
    }while(rehash==1);
}
int Cuckoo::insert(int x)
{
    if(find(x)) return 1;
    int pos1,pos2,c=0,last=2,aux;
    while(c<=log2(size))
    {
        if(last==2)
        {
            pos1=f1(x);
            if(H[pos1]==0)
            {
                H[pos1]=x;
                return 1;
            }
            else
            {
                aux=H[pos1];
                H[pos1]=x;
                x=aux;
                last=1;
            }
        }
        else
        {
            pos2=f2(x);
            if(H[pos2]==0)
            {
                H[pos2]=x;
                return 1;
            }
            else
            {
                aux=H[pos2];
                H[pos2]=x;
                x=aux;
                last=2;
            }
        }
        c++;
    }
    return 0;
}
void Cuckoo::remove(int x)
{
    int pos;
    pos=f1(x);if(H[pos]==x) H[pos]=0;
    pos=f2(x);if(H[pos]==x) H[pos]=0;
}
int Cuckoo::find(int x)
{
    if(H[f1(x)]==x || H[f2(x)]==x) return 1;
    return 0;
}
int main()
{
    Cuckoo HTab(1000003);
    HTab.hash("hashuri.in","hashuri.out");
    return 0;
}