Mai intai trebuie sa te autentifici.

Cod sursa(job #1360490)

Utilizator MateiTMatei Tita MateiT Data 25 februarie 2015 15:31:24
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.07 kb
#include <iostream>
#include <fstream>
using namespace std;
int v[1000000],n;
const int l=16;
ifstream in("cautbin.in");
ofstream out("cautbin.out");

int cautbin0(int x)
{
    int i=0,pas=1<<l;
    while(pas!=0)
    {
        if(i+pas<=n && v[i+pas]<=x)
          i+=pas;
        pas/=2;
    }
    if(v[i]==x)
      return i;
    else
      return -1;
}

int cautbin1(int x)
{
    int i=0,pas=1<<l;
    while(pas!=0)
    {
        if(i+pas<=n && v[i+pas]<=x)
          i+=pas;
        pas/=2;
    }
    return i;
}

int cautbin2(int x)
{
    int i=0,pas=1<<l;
    while(pas!=0)
    {
        if(i+pas<=n && v[i+pas]<x)
          i+=pas;
        pas/=2;
    }
    return 1+i;
}

int main ()
{
    int m,tip,val;
    in>>n;
    for(int j=1;j<=n;j++)
        in>>v[j];
    in>>m;
    for(int i=1;i<=m;i++)
    {
        in>>tip>>val;
        if (tip==0)
            out<<cautbin0(val)<<'\n';
        if (tip==1)
            out<<cautbin1(val)<<'\n';
        if (tip==2)
            out<<cautbin2(val)<<'\n';
    }
    return 0;
}