Cod sursa(job #944509)

Utilizator SeBy24Cont Sters SeBy24 Data 28 aprilie 2013 20:59:11
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.09 kb
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int a,n,m,i,j,mij,r,b,mic,mare;
unsigned long s[100001];
int main()
{
    f>>n;
    for(i=1;i<=n;i++)
        f>>s[i];
    f>>m;
    for (i=1;i<=m;i++)
    {
        f>>a;
        f>>b;
        r=-1;
        mic=1;
        mare=n;
        if (a<1)
        {
        while(mic<=mare)
    {
        mij=(mic+mare)/2;
        if (s[mij]==b)
        {
            r=mij;
            mic=mij+1;
        }
        if(s[mij]<b)
            mic=mij+1;
        if (s[mij]>b)
            mare=mij-1;
    }
        }
        else if (a<2)
        {
        while(mic<=mare)
    {
        mij=(mic+mare)/2;
        if(s[mij]<=b)
            r=mij,mic=mij+1;
        else
            mare=mij-1;
    }
        }
        else
        {
        while(mic<=mare)
    {
        mij=(mic+mare)/2;
        if(s[mij]>=b)
            r=mij,mare=mij-1;
        else
            mic=mij+1;
    }
        }
        g<<r<<'\n';
    }

    f.close();
    g.close();
    return 0;
}