Cod sursa(job #333785)
Utilizator | Gutu Pavel levap1506 | Data | 23 iulie 2009 20:56:58 |
---|---|---|---|
Problema | Hashuri | Scor | 70 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.59 kb |
#include <fstream>
#include <map>
using namespace std;
map<int,int> Mymap;
int main() {
ifstream in;
ofstream out;
in.open("hashuri.in");
out.open("hashuri.out");
int N,i,op,a;
in >> N;
for (i=0;i<N;i++)
{
in >> op >> a;
switch (op) {
case 1:
if (Mymap.find(a)==Mymap.end()) Mymap[a]=1;
break;
case 2:
if (Mymap.find(a)!=Mymap.end()) Mymap.erase(a);
break;
case 3:
out<< !(Mymap.find(a)==Mymap.end()) << "\n";
}
}
out.close();
return 0;
}