Cod sursa(job #1789810)

Utilizator medicinedoctoralexandru medicinedoctor Data 27 octombrie 2016 15:36:51
Problema Hashuri Scor 70
Compilator cpp Status done
Runda Arhiva educationala Marime 0.35 kb
Raporteaza aceasta sursa 
#include <fstream>
#include <map>

using namespace std;

ifstream cin("hashuri.in");
ofstream cout("hashuri.out");

map <int,bool> MM;

main()
{
    int n,x,y;
    cin >> n;
    for ( ; n ; n--)
    {
        cin >> x >> y;
        if (x==1) MM[y]=true;
        if (x==2) MM.erase(y);
        if (x==3) cout << MM.count(y) << '\n';
    }
}