Cod sursa(job #2702690)

Utilizator MateGMGozner Mate MateGM Data 5 februarie 2021 15:23:35
Problema Hashuri Scor 60
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.49 kb
#include <fstream>
#include <map>
using namespace std;

int main()
{
    ifstream be("hashuri.in");
    ofstream ki("hashuri.out");

    map<int,int>m;
    int n,db=0;
    be>>n;
    for(int i=1;i<=n;i++)
    {
        int x,y;
        be>>x>>y;
        if(x==1 && m.find(y)==m.end()){
            m[y]=db++;
        }
        if(x==2)m.erase(y);
        if(x==3)
        {
            bool c=m.find(y)!=m.end();
            ki<<c<<endl;
        }
    }
    return 0;
}