Cod sursa(job #2941109)

Utilizator Ciuca_Stefan06Ciuca Stefan Ciuca_Stefan06 Data 17 noiembrie 2022 09:56:55
Problema Cautare binara Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.45 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
long long n,i,a[1001],m,st,dr,x,nri,caz,poz;
int main()
{
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>a[i];
    fin>>nri;
    while(nri)
    {
        fin>>caz>>x;
        if(caz==2)
        {
            st=1;
            dr=n;
            poz=0;
            while(st<=dr)
            {
                m=(st+dr)/2;
                if(a[m]>=x)
                {
                    poz=m;
                    dr=m-1;
                }
                else st=m+1;
            }
            fout<<poz<<'\n';
        }
        else if(caz==0)
        {
            st=1;
            dr=n;
            poz=0;
            while(st<=dr)
            {
                m=(st+dr)/2;
                if(a[m]==x)
                {
                    poz=m;
                    st=m+1;
                }
                else dr=m-1;
            }
            if(poz==0)fout<<-1<<'\n';
            else fout<<poz<<'\n';
        }
        else
        {
            st=1;
            dr=n;
            poz=0;
            while(st<=dr)
            {
                m=(st+dr)/2;
                if(a[m]<=x)
                {
                    poz=m;
                    st=m+1;
                }
                else dr=m-1;
            }
            fout<<poz<<'\n';
        }
        nri--;
    }
}