Cod sursa(job #2417946)

Utilizator cyg_Alex_codegicianBarbu Alexandru cyg_Alex_codegician Data 2 mai 2019 14:02:22
Problema Cautare binara Scor 20
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.1 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int main()
{
    int n,x,m,v[100],i,st,dr,mij,cerinta;
    fin >> n;
    for (i=1;i<=n;i++)
    {
        fin >> v[i];
    }
    fin >> m;
    for (i=1;i<=m;i++)
    {
        fin >> cerinta >> x;
        if (cerinta==0||cerinta==1)
        {
            st=1;
            dr=n;
            while (st<dr)
            {
                mij=(st+dr+1)/2;
                if (v[mij]<=x) st=mij;
                else dr=mij-1;
            }
            if (cerinta==0)
            {
                if (v[st]==x) fout << st << '\n';
                else fout << -1 << '\n';
            }
            else
            {
                fout << st << '\n';
            }
        }
        else if (cerinta==2)
        {
            st=1;
            dr=n;
            while (st<dr)
            {
                mij=(st+dr)/2;
                if (v[mij]>=x) dr=mij;
                else st=mij+1;
            }
            fout << st << '\n';
        }
    }
}