Cod sursa(job #966814)

Utilizator addy01adrian dumitrache addy01 Data 26 iunie 2013 16:42:04
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.88 kb
#include <iostream>
#include <cstdio>
using namespace std;
int v[100010],maxim=-1,maxim2,minim;




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

    int i,n,m,st,dr;
    cin>>n;
    for(i=1;i<=n;i++)
        cin>>v[i];
        cin>>m;
    while(m--)
    {
        int x,querry;
        cin>>querry>>x;
        st=1;
        dr=n;
        if(querry==0)
            {
        while(st<dr)
        {
        int mid=(st+dr)/2;
        if(v[mid]==x)
           {
            if(maxim<mid)
               {
                    maxim=mid;
                    st=mid+1;
                }
            }
            else
                if(x<v[mid])
                   dr=mid-1;
                else
                    st=mid-1;
        }
                cout<<maxim<<"\n";
                maxim=-1;
            }

        else
            if(querry==1)
        {
            maxim2=-1;
        while(st<dr)
        {
        int mid=(st+dr)/2;
        if(v[mid]<=x)
            {
                if(maxim2<mid)
                {
                    maxim2=mid;
                    st=mid+1;
                }
            }
            else
                if(x<v[mid])
                    dr=mid-1;
                else
                    st=mid+1;
        }
            cout<<maxim2<<"\n";

        }
        else
        {
            minim=dr;
        while(st<dr)
        {
        int mid=(st+dr)/2;
        if(v[mid]>=x)
            {
                if(minim>mid)
                {
                    minim=mid;
                    dr=mid-1;
                }
            }
            else
                if(x<v[mid])
                    dr=mid-1;
                else
                    st=mid+1;
        }
            cout<<minim-1<<"\n";
        }


    }


    return 0;
}