Cod sursa(job #2722981)

Utilizator Fatu_SamuelFatu Samuel Fatu_Samuel Data 13 martie 2021 14:12:41
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.04 kb
#include <fstream>
#include <vector>
#include <algorithm>

using namespace std;

ifstream fin("cautbin.in");
ofstream fout("cautbin.out");

const int nMax = 100000 + 10;

vector < int > v;
int n, m, e, c;

int main()
{
    fin >> n;
    v.resize(n);

    for (int i = 0; i < n; i++)
    {
        fin >> v[i];
    }
    
    fin >> m;

    for (int i = 0; i < m; i++)
    {
        fin >> c >> e;

        if (c == 0)
        {
            int pos = upper_bound(v.begin(), v.end(), e) - v.begin() - 1;

            if (v[pos] == e && pos < n)
            {
                fout << pos + 1 << '\n';
            }
            else
            {
                fout << "-1\n";
            }
        }
        else if (c == 1)
        {
            fout << upper_bound(v.begin(), v.end(), e) - v.begin() << '\n';
        }
        else if (c == 2)
        {
            fout << lower_bound(v.begin(), v.end(), e) - v.begin() + 1 << '\n';
        }
    }


    fin.close();
    fout.close();
    return 0;
}