Cod sursa(job #1902825)

Utilizator alexandrutarcanTarcan Alexandru alexandrutarcan Data 4 martie 2017 20:09:00
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.92 kb
#include<fstream>
#include<algorithm>
#define DMAX 100001
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n,m,a[DMAX],i,x,poz,intrebare;
int main()
{
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>a[i];
    fin>>m;
    for(i=1;i<=m;i++)
    {
        fin>>intrebare>>x;
        if(intrebare==0)
        { //cea mai mare pozitie a unui element = x
            poz=upper_bound(a+1,a+n+1,x)-a-1;
            if(poz>=1 && poz<=n && a[poz]==x)
                fout<<poz<<'\n';
            else
            fout<<-1<<'\n';
        }
        else if(intrebare==1)
        {//cea mai mare pozitie a unui element <= x
            poz=upper_bound(a+1,a+n+1,x)-a-1;
            fout<<poz<<'\n';
        }
        else
        {//cea mai mica pozitie a unui element >= x
            poz=upper_bound(a+1,a+n+1,x-1)-a;
            fout<<poz<<'\n';
        }
    }
    return 0;
}