#include <fstream>
#include <vector>

using namespace std;

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

const int MOD = 666013;
vector <int> v[MOD + 5];

int main()
{
    int N;
    fin >> N;

    int op, x;
    for(int i = 1; i <= N; i++)
    {
        fin >> op >> x;
        vector <int> :: iterator it;

        if(op == 1)
        {
            int nr = x;
            x %= MOD;

            for(it = v[x].begin(); it != v[x].end() && *it != nr; it++);

            if(it == v[x].end())
                v[x].push_back(nr);
        }
        else if(op == 2)
        {
            int nr = x;
            x %= MOD;

            for(it = v[x].begin(); it != v[x].end() && *it != nr; it++);

            if(it != v[x].end())
                v[x].erase(it);
        }
        else
        {
            int nr = x;
            x %= MOD;

            for(it = v[x].begin(); it != v[x].end() && *it != nr; it++);

            if(it == v[x].end())
                fout << 0 << '\n';
            else
                fout << 1 << '\n';
        }
    }

    return 0;
}