Cod sursa(job #2617959)

Utilizator george_sdGeorge george_sd Data 23 mai 2020 13:31:43
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.03 kb
#include <iostream>
#include <fstream>
using namespace std;

int n, v[100001];

int caut0(int x)
{
    int i=0, pas=(1<<16);
    while(pas != 0)
    {
        if (i+pas<=n && v[i+pas]<=x)
            i += pas;
        pas/=2;
    }
    if(v[i]==x)
        return i;
    return -1;
}

int caut1(int x)
{
    int i=0, pas=(1<<16);
    while(pas!=0)
    {
        if(i+pas<=n && v[i+pas]<=x)
            i+=pas;
        pas/=2;
    }
    return i;
}

int caut2(int x)
{
    int i=0, pas=(1<<16);
    while (pas!=0)
    {
        if (i+pas<=n && v[i+pas]<x)
            i += pas;
        pas/=2;
    }
    return i+1;
}

int main()
{
    int i, q, w, c;
    ifstream f("cautbin.in");
    ofstream g("cautbin.out");
    f>>n;
    for(i=1; i<=n; i++)
        f>>v[i];
    f>>q;
    for(i=0; i<q; i++)
    {
        f>>w>>c;
        if (w==0)
            g<<caut0(c);
        if (w==1)
            g<<caut1(c);
        if (w==2)
            g<<caut2(c);
        g << "\n";
    }
    return 0;
}