Cod sursa(job #1804137)

Utilizator ionutmargineancnuMarginean Ionut ionutmargineancnu Data 12 noiembrie 2016 11:38:55
Problema Hashuri Scor 70
Compilator cpp Status done
Runda Arhiva educationala Marime 0.56 kb
#include <fstream>
#include <set>
using namespace std;
ifstream fin ("hashuri.in");
ofstream fout ("hashuri.out");
set<int> s;
int n,i,op,x;
int main()
{
    fin>>n;
    for ( i=1; i<=n ; i++)
    {
        fin>>op>>x;
        switch( op )
        {
            case 1:
                {
                    s.insert(x);
                }break;

            case 2:
                {
                    s.erase(x);
                }break;
            default:
                fout<<(s.find(x) != s.end())<<"\n";
        }
    }

    return 0;
}