Cod sursa(job #2754976)

Utilizator DannyDMGMalancioiu Daniel DannyDMG Data 26 mai 2021 18:28:28
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.5 kb
#include <iostream>
#include <fstream>
using namespace std;

ifstream f("cautbin.in");
ofstream g("cautbin.out");



int main()
{
    int n,i,c,x,p,m,u,mij,poz,v[100100];

    f>>n;
    for(int i=1; i<=n; i++)f>>v[i];
    f>>m;
    for(int i=1; i<=m; i++)
    {
        f>>c>>x;
        if(c==0)
        {
            p=1;
            u=n;
            poz=-1;
            while(p<=u)
            {
                mij=(p+u)/2;
                if(v[mij]<=x)
                {
                    poz=mij;
                    p=mij+1;
                }
                else
                    u=mij-1;
            }

            if(v[poz]==x)
                g<<poz<<'\n';
            else
                g<<-1<<'\n';
        }
        else if(c==1)
        {
            p=1;
            u=n;
            poz=-1;
            while(p<=u)
            {
                mij=(p+u)/2;
                if(v[mij]<=x)
                {
                    poz=mij;
                    p=mij+1;
                }
                else u=mij-1;
            }
            g<<poz<<'\n';
        }
        else
        {
            p=1;
            u=n;
            poz=-1;
            while(p<=u)
            {
                mij=(p+u)/2;
                if(v[mij]>=x)
                {
                    poz=mij;
                    u=mij-1;
                }
                else p=mij+1;
            }
            g<<poz<<'\n';
        }
    }
    return 0;
}