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#include <fstream>
#include <vector>
using namespace std;
ifstream in("hashuri.in");
ofstream out("hashuri.out");
int main(){
vector<int> v(786433);
int n, i, a, b;
long long c;
in>>n;
for(i=0;i<n;++i){
in>>a>>c;
b=(int)c%786433;
if(a==1){
v[b]=c%393241;
}
else if(a==2){
v[b]=0;
}
else{
if(v[b]==c%393241){
out<<1<<'\n';
}
else{
out<<0<<'\n';
}
}
}
return 0;
}