Cod sursa(job #2427832)

Utilizator tudor.jinescuJinescu Tudor tudor.jinescu Data 2 iunie 2019 13:41:01
Problema Cautare binara Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.7 kb
#include <iostream>
#include <fstream>

using namespace std;

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

int v[100001];
int main()
{
    int n, m, x, st, dr, mij, i, p, j, pos;
    in >> n;
    for (i=1; i<=n; i++)
    in >> v[i];
    in >> m;
    for (j=1; j<=m; j++)
    {
        in >> p >> x;
        if(p==0)
        {
            st=1;
            dr=n;
            pos=-1;
            while (st<dr)
            {
                mij=(st+dr)/2;
                if (v[mij]<=x)
                {
                    st=mij+1;
                    pos=mij;
                }
                else
                dr=mij-1;
            }
            if(v[pos]==x)
            out << pos;
            else
            out << "-1";
            out << endl;
        }
        if (p==1)
        {
            st=1;
            dr=n;
            pos=-1;
            while (st<=dr)
            {
                mij=(st+dr)/2;
                if (v[mij]<=x)
                {
                    st=mij+1;
                    pos=mij;
                }
                else
                dr=mij-1;
            }
            if (v[pos]<=x)
            out << pos;
            out << endl;
        }
        if (p==2)
        {
            st=1;
            dr=n;
            pos=+1;
            while (st<=dr)
            {
                mij=(st+dr)/2;
                if (v[mij]>=x)
                {
                    dr=mij-1;
                    pos=mij;
                }
                else
                st=mij+1;
            }
            if (v[pos]>=x)
            out << pos;
            out << endl;
        }
    }
    return 0;
}