Cod sursa(job #2722774)

Utilizator danhHarangus Dan danh Data 13 martie 2021 11:58:16
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.91 kb
#include <iostream>
#include <fstream>
#include <algorithm>
using namespace std;

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

const int NMAX = 100005;

int v[NMAX];

int main()
{
    int n, i, m, p, x;
    fin>>n;
    for(i=1; i<=n; i++)
    {
        fin>>v[i];
    }

    int poz;
    fin>>m;
    for(i=1; i<=m; i++)
    {
        fin>>p>>x;
        if(p == 0)
        {
            poz = upper_bound(v+1, v+n+1, x) - v - 1;
            if(poz <= n && v[poz]== x)
            {
                fout<<poz<<'\n';
            }
            else
            {
                fout<<"-1\n";
            }

        }
        else if(p == 1)
        {
            fout<<upper_bound(v+1, v+n+1, x) - v - 1<<'\n';
        }
        else
        {
            fout<<lower_bound(v+1, v+n+1, x) - v<<'\n';
        }
    }
    fin.close();
    fout.close();
    return 0;
}