Cod sursa(job #1142711)

Utilizator PletoPletosu Cosmin-Andrei Pleto Data 14 martie 2014 08:51:36
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.79 kb
#include <fstream>

using namespace std;
ifstream f("cautbin.in");ofstream g("cautbin.out");
int a[100001];
int main()
{
    int n,m,c,r;
    f>>n;
    for(int i=1;i<=n;i++)
    {
        f>>a[i];
    }
    f>>m;
    for(int i=1;i<=m;i++)
    {
        f>>c>>r;
        switch(c)
        {
            case 0:
            {
                int p=1,u=n,ok=0,m,poz;
                while(p<=u && ok==0)
                {
                    m=(p+u)/2;
                    if(r==a[m])
                        ok=1,poz=m;
                    else
                    {
                        if(r<a[m])
                            u=m-1;
                        else p=m+1;
                    }
                }
                if(ok)
                {
                    while(a[poz]==a[poz+1]) poz++;
                    g<<poz<<'\n';
                }
                else g<<"-1"<<'\n';
                break;
            }

            case 1:
            {
                int p=1,u=n,ok=0,m,poz;
                while(p<=u && ok==0)
                {
                    m=(p+u)/2;
                    if(r==a[m])
                        ok=1,poz=m;
                    else
                    {
                        if(r<a[m])
                            u=m-1;
                        else p=m+1;
                    }
                }
                if(ok)
                {
                    while(a[poz]==a[poz+1]) poz++;
                    g<<poz<<'\n';
                }
                else
                {
                    g<<'\n'<<a[poz];
                }
                break;
            }

            case 2:
            {

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