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#include<fstream>
#include<iostream>
#include<vector>
#include<bitset>
#define DN 15000
using namespace std;
ifstream fin("hashuri.in");
ofstream fout("hashuri.out");
bitset<DN>a[DN];
int n,type,x;
int main()
{
// cout<<sizeof(a)/1000;
fin>>n;
for(int i=1;i<=n;i++)
{
fin>>type>>x;
if(type==1)
a[x/DN][x%DN]=1;
else
if(type==2)
a[x/DN][x%DN]=0;
else
fout<<a[x/DN][x%DN]<<'\n';
}
}