Cod sursa(job #1420916)

Utilizator code_and_rosesUPB Dinu Neatu Rotaru code_and_roses Data 19 aprilie 2015 09:53:26
Problema Hashuri Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.5 kb
// Hashuri - map
#include <fstream>
#include <map>
#include <unordered_map>
using namespace std;
ifstream f("hashuri.in");
ofstream g("hashuri.out");

int N,K;
//map <int, int> H;
unordered_map<int, int> H;

int main()
{
    f>>N;
    for(int i=1;i<=N;++i)
    {
        int tip,x;
        f>>tip>>x;
        if (tip==1 && H.find(x)==H.end()) H[x] = ++K;
        if (tip==2) H.erase(x);
        if (tip==3) g<<(H.find(x)!=H.end())<<'\n';
    }
    f.close();g.close();
    return 0;
}