#include <cstdio>
#include <time.h>
#include <stdlib.h>
#define nc 57
#define a1 240000
#define a2 210000
#define b1 40000
#define b2 70000
#define size 290000
using namespace std;
int const1,const2;
int i;
int poz1(int x)
{
    return x%const1;
}

int poz2(int x)
{
    return x%const2;
}

int find(int x,int *h1,int *h2)
{
	if(h1[poz1(x)]==x || h2[poz2(x)]==x)
        return 1;
        return 0;
}

 int add(int x,int *h1,int *h2)
{
    int i,aux;
	int care=1;
    
    if (find(x,h1,h2) == 1)
    {
	return 1;
    }
    for(i=1;i<=nc;i++)
    {
        if(h1[poz1(x)]==0)
        {
            h1[poz1(x)]=x;
            return 1;
        }
        else
	if(h2[poz2(x)]==0)
        {
            h2[poz2(x)]=x;
            return 1;
        }
        else
	if (care==1)
	{
            aux=h1[poz1(x)];
            h1[poz1(x)]=x;
            x=aux;

        }
	else
        {
            aux=h2[poz2(x)];
            h2[poz2(x)]=x;
            x=aux;

        }
	care=-care;	
    }
	return 0;
}


int erase(int x,int *h1,int *h2)
{

    if(h1[poz1(x)]==x)
    {
        h1[poz1(x)]=0;
        return 1;
    }

    if(h2[poz2(x)]==x)
    {
        h2[poz2(x)]=0;
        return 1;
    }
    return 0;
}

void rehash()
{
    const1=a1+rand()%b1;
    const2=a2+rand()%b2;
    
}




int main()
{
    freopen("hashuri.in","r",stdin);
    freopen("hashuri.out","w",stdout);
    int n,op,x;
    scanf("%d",&n);
    srand(time(NULL));

    const1=a1+rand()%b1;
    const2=a2+rand()%b2;

    int *h1=new int[size];
    int *h2=new int[size];
    int ok = 0;
    while (ok == 0)
    {	
	ok = 1;
	rehash();
    while(n!=0)
    {
	FILE *in = fopen("hashuri.in","r");
	FILE *out = fopen("hashuri.out","w");
	int y;
	fscanf(in,"%d",&y);
        fscanf(in,"%d%d",&op,&x);

        if(op==1)
        {	
	
            if(add(x,h1,h2)==0)
	    {
		ok = 0;
		break;
	    }
                
        }

        if(op==2)
        {
	    erase(x,h1,h2);
	}

        if(op==3)
            if(find(x,h1,h2))
                 fprintf(out,"1\n");
            else fprintf(out,"0\n");

		n--;
    }
    }

    return 0;

}