Cod sursa(job #401289)

Utilizator DraStiKDragos Oprica DraStiK Data 22 februarie 2010 18:41:44
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.03 kb
#include <algorithm>
#include <vector>
using namespace std;

#define pb push_back

vector <int> v;
int n,m;

void read ()
{
    int i,x;

    scanf ("%d",&n);
    for (i=1; i<=n; ++i)
    {
        scanf ("%d",&x);
        v. pb (x);
    }
}

void query ()
{
    int i,tip,x,y;

    scanf ("%d",&m);
    for (i=1; i<=m; ++i)
    {
        scanf ("%d%d",&tip,&x);
        if (tip==0)
        {
            y=upper_bound (v.begin (),v.end (),x)-v.begin ()-1;
            if (v[y]==x)
                printf ("%d\n",y+1);
            else
                printf ("-1\n");
        }
        else if (tip==2)
        {
            y=lower_bound (v.begin (),v.end (),x)-v.begin ();
            printf ("%d\n",y+1);
        }
        else
        {
            y=upper_bound (v.begin (),v.end (),x)-v.begin ()-1;
            printf ("%d\n",y+1);
        }
    }
}

int main ()
{
    freopen ("cautbin.in","r",stdin);
    freopen ("cautbin.out","w",stdout);

    read ();
    query ();

    return 0;
}