Cod sursa(job #2930525)

Utilizator marriAzMaria Cellsia Zemora marriAz Data 28 octombrie 2022 16:49:05
Problema Cautare binara Scor 40
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.56 kb
#include <iostream>
#include <fstream>
#include <cmath>

using namespace std;

int main()
{
    ifstream fin("cautbin.in");
    ofstream fout("cautbin.out");
    int n,m,i,v[10001],t,poz,mij,x;
    fin>>n;
    for(i=1; i<=n; i++)
        fin>>v[i];
    fin>>m;
    for(i=1; i<=m; i++)
    {
        fin>>t>>x;
        if(t==0)
        {
            int dr=n, st=1;
            poz=-1;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]==x)
                {
                    poz=mij;
                    st=mij+1;
                }
                else if(v[mij]<x)
                    st=mij+1;
                else
                    dr=mij-1;
            }
            fout<<poz<<"\n";
        }
        else if(t==1)
        {
            int st=1,dr=n;
            poz=-1;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<=x)
                {
                    st=mij+1;
                    poz=mij;
                }
                else
                    dr=mij-1;
            }
            fout<<poz<<"\n";
        }
        else
        {
            int st=1,dr=n;
            poz=-1;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]>=x)
                {
                    dr=mij-1;
                    poz=mij;
                }
                else
                    st=mij+1;
            }
            fout<<poz<<"\n";
        }

    }
    return 0;
}