Pagini recente » Diferente pentru utilizator/radugabriel2012 intre reviziile 20 si 102 | Cod sursa (job #2097740)
#include<fstream>
#include<vector>
using namespace std;
ifstream f("hashuri.in");
ofstream g("hashuri.out");
int N,x,tip;
vector <int> G[666013];
vector<int>::iterator exist_element(int x){
int list=x%666013;
vector<int>::iterator it;
for(it=G[list].begin();it!=G[list].end();++it)
if(*it==x)
return it;
return G[list].end();
}
void insert_element(int x){
int list=x%666013;
if(exist_element(x)==G[list].end())G[list].push_back(x);
}
void erase_element(int x){
int list=x%666013;
vector<int>::iterator it=exist_element(x);
if(it!=G[list].end())G[list].erase(it);
}
int main()
{
f>>N;
while(N--){
f>>tip>>x;
if(tip==1)insert_element(x);
else if(tip==2)erase_element(x);
else{
int list=x%666013;
if(exist_element(x)!=G[list].end())g<<1<<'\n';
else g<<0<<'\n';
}
}
return 0;
}