Cod sursa(job #2681250)

Utilizator Daria_DascaluDascalu Daria-Mihaela Daria_Dascalu Data 5 decembrie 2020 10:43:47
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.03 kb
#include <fstream>

using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int v[100005];

int main()
{
    int N,M,ques,lf,rg,val,poz;
    fin>>N;
    for(int i=1; i<=N; i++)
    {
        fin>>v[i];
    }
    fin>>M;
    for(int i=1; i<=M; i++)
    {
        lf=1;
        rg=N;
        fin>>ques>>val;
        if(ques==0 || ques==1)
        {
            while(lf<=rg)
            {
                int med=(lf+rg)/2;
                if(v[med]<=val)
                {
                    poz=med;
                    lf=med+1;
                }
                else rg=med-1;
            }
            if(ques==0&&v[poz]!=val) fout<<"-1"<<'\n';
            else fout<<poz<<'\n';

        }
        if (ques==2)
        {
            while(lf<=rg)
            {
                int med=(lf+rg)/2;
                if(v[med]>=val)
                {
                    poz=med;
                    rg=med-1;
                }
                else lf=med+1;
            }
            fout<<poz<<'\n';
        }
    }
    return 0;
}