#include <iostream>
#include <fstream>
using namespace std;
int n,mod=1000003,i,type,val,h[1000005];
int main()
{
    freopen("hashuri.in","r",stdin);
    freopen("hashuri.out","w",stdout);
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
        scanf("%d%d",&type,&val);
        if(type==1)
            h[val%mod]=1;
        else
            if(type==2)
                h[val%mod]=0;
            else
                printf("%d\n",h[val%mod]);
    }
    return 0;
}