Cod sursa(job #2215440)

Utilizator stefantagaTaga Stefan stefantaga Data 22 iunie 2018 10:31:59
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.92 kb
#include <fstream>
#include <algorithm>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int n,v[100001],i,x,m,pr,p,u,ok1,poz,j,mm;
int main()
{
    f>>n;
    for (i=1;i<=n;i++)
    {
        f>>v[i];
    }
    f>>mm;
    for (i=1;i<=mm;i++)
    {
        f>>pr>>x;
        ok1=0;
        if (pr==0)
        {
            p=1;
            u=n;
            while (p<=u)
            {
                m=(p+u)/2;
                if (v[m]<x)
                {
                    p=m+1;
                }
                else
                if (v[m]==x)
                {
                    ok1=1;
                    poz=m;
                    break;
                }
                else
                {
                    u=m-1;
                }
            }
            if (ok1==0)
            {
                g<<"-1"<<'\n';
            }
            else
            {
                for (j=poz;j<=n;j++)
                {
                    if (v[j]!=x)
                    {
                        break;
                    }
                }
                j--;
                g<<j<<'\n';
            }
        }
        else
            if (pr==1)
        {
       poz=upper_bound(v+1,v+n+1,x)-v;
        if (v[poz]>x)
        {
            poz--;
        }
        if (poz>n)
        {
            poz--;
        }
            g<<poz<<'\n';
        }
        else
        {
            p=1;
            u=n;
            while (p<=u)
            {
                m=(p+u)/2;
                if (v[m]<x)
                {
                    p=m+1;
                }
                else
                {
                    u=m-1;
                }
            }
            m=(p+u)/2;
            if (v[m]<x)
            {
                m++;
            }
            g<<m<<'\n';
        }
    }
    return 0;
}