Cod sursa(job #1804137)
Utilizator | 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;
}