Cod sursa(job #1050241)

Utilizator CatlinvCatalin Sbera Catlinv Data 8 decembrie 2013 13:44:42
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.8 kb
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int v[20005];
int main()
{
   int n,m,a,b,x,mij,st,dr,i;
    f>>n;
    for(i=1;i<=n;i++)
        f>>v[i];
    f>>m;
    f>>a>>x;
    for(st=0,dr=n;st<dr;)
    {
        mij=(st+dr)/2;
        if(v[mij]<=x)
            st=mij+1;
        else
            dr=mij-1;
    }
    if(v[mij]==x)
        g<<mij<<'\n';
    else
        g<<"-1"<<'\n';
    f>>a>>x;
    for(st=0,dr=n;st<dr;)
    {
        mij=(st+dr)/2;
        if(v[mij]<=x)
            st=mij+1;
        else
            dr=mij-1;
    }
    g<<mij<<'\n';
    for(st=1,dr=n-1;st<dr;)
    {
        mij=(st+dr)/2;
        if(v[mij]>=x)
            dr=mij-1;
        else
            st=mij+1;
    }
    g<<mij;


 return 0;
}