#include <fstream>
#include <vector>
#define MAX 3010
#define MOD 666013

using namespace std;
ifstream fin("hashuri.in");
ofstream fout("hashuri.out");

vector<int> tabladehas[MOD + 10];
int ok, rest, x, operatii, n;

int main()
{
    int i, j;
    fin >> operatii;
    for(i=1; i<=operatii; i++)
    {
        fin >> x >> n;
        rest = n % MOD;
        ok = 0;
        for(j=0; j<tabladehas[rest].size(); j++)
            if(tabladehas[rest][j] == n)
            {
                ok = 1;
                break;
            }
        if(x == 1 && !ok)
            tabladehas[rest].push_back(n);
        else if(x == 2 && ok)
        {
            swap(tabladehas[rest][j], tabladehas[rest][tabladehas[rest].size() - 1]);
            tabladehas[rest].pop_back();
        }
        else if(x == 3)
        {
            if(ok) fout << 1 << '\n';
            else fout << 0 << '\n';
        }

    }
    return 0;
}