#include <cstdio>
using namespace std;

struct lista
{
    int x;
    lista* u;
}*a[9973][2];

lista *cauta(int x)
{
    lista *p=a[x%9973][0];
    while(p->u)
    {
        if(p->u->x==x) return p;
        p=p->u;
    }
    return NULL;
}

int main()
{
    freopen("hashuri.in","r",stdin);
    freopen("hashuri.out","w",stdout);
    int t,x;
    lista *p,*q;
    for(t=0;t<9973;++t)
    {
        a[t][0]=a[t][1]=new lista;
        a[t][1]->u='\0';
    }
    scanf("%d",&t);
    while(t)
    {
        --t;
        scanf("%d",&x);
        switch(x)
        {
            case 1:
            {
                scanf("%d",&x);
                p=new lista;
                a[x%9973][1]->u=p;
                p->x=x;
                p->u='\0';
                a[x%9973][1]=p;
                break;
            }
            case 2:
            {
                scanf("%d",&x);
                p=cauta(x);
                if(p)
                {
                    q=p->u;
                    p->u=q->u;
                    if(!q->u) a[x%9973][1]=p;
                    delete q;
                }
                break;
            }
            case 3:
            {
                scanf("%d",&x);
                if(cauta(x)) printf("1\n");
                else printf("0\n");
                break;
            }
        }
    }
    return 0;
}