Cod sursa(job #1539621)

Utilizator DacianBocea Dacian Dacian Data 1 decembrie 2015 02:41:02
Problema Hashuri Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.34 kb
Raporteaza aceasta sursa 
#include <fstream>
#include <unordered_set>
using namespace std;
ifstream f("hashuri.in");
ofstream of("hashuri.out");
int main(){
	unordered_set<int> H;
	int N, x, op;
	f >> N;
	for (int i = 1; i <= N; ++i){
		f >> op >> x;
		if (op == 1)H.insert(x);
		else if (op == 2)H.erase(x);
		else if (op == 3)of << (H.count(x) > 0) << "\n";
	}
}