Cod sursa(job #2384432)

Utilizator VirtosuAlexandraVirtosu Alexandra Mihaela VirtosuAlexandra Data 20 martie 2019 18:53:39
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.4 kb
#include <fstream>

using namespace std;
ifstream fin ("cautbin.in");
ofstream fout ("cautbin.out");
int n, m, v[100000], x, cod;
int main()
{
    fin>>n;
    for(int i=1; i<=n; i++)fin>>v[i];
    fin>>m;
    for(int i=1; i<=m; i++)
    {
        fin>>cod>>x;
        if(cod==0)
        {
            int st=1, dr=n, mij=0;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<=x)
                st=mij+1;
                else dr=mij-1;
            }
            if(v[dr]==x)fout<<dr<<"\n";
            else fout<<"-1\n";
        }
        if(cod==1)
        {
             int st=1, dr=n, mij=0, poz=0;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<=x)
                {
                    st=mij+1;
                    poz=mij;
                }

                else if(v[mij]>x)
                {
                    dr=mij-1;
                }

            }
            fout<<poz<<"\n";
        }
        if(cod==2)
        {
            int st=1, dr=n, mij=0, poz=0;
            while(st<=dr)
            {
                mij=(st+dr)/2;
               if(v[mij]>=x)
               {
                   poz=mij;
                   dr=mij-1;
               }
               else st=mij+1;

            }
            fout<<poz<<"\n";
        }
    }

    return 0;
}