Cod sursa(job #2698556)

Utilizator Stormtrooper-007Vartic Rihard Stormtrooper-007 Data 22 ianuarie 2021 14:49:50
Problema Hashuri Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.29 kb
Raporteaza aceasta sursa 
#include <bits/stdc++.h>

using namespace std;

int main()
{unordered_map<int,bool>v;
int n,a,b;
cin>>n;
for(int i=1;i<=n;i++)
{
    cin>>a>>b;
    if(a==1 && v[b]==0)
    v[b]=1;
    else if(a==2 && v[b]==1)
    v[b]=0;
    else if(a==3)
    cout<<v[b]<<'\n';

}
    return 0;
}