Cod sursa(job #904478)

Utilizator GManiakGhenea Catalin GManiak Data 4 martie 2013 15:00:14
Problema Cautare binara Scor 40
Compilator cpp Status done
Runda Arhiva educationala Marime 0.71 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream in("cautbin.in");
ofstream out("cautbin.out");
int v[100001],n;
int cautb(int x)
{
    int i=1,pas=1<<16;
    while(pas!=0)
    {
        if(i+pas<=n && v[i+pas]<=x)
            i+=pas;
        pas/=2;
    }
    return i;
}
int main()
{
    in>>n;
    for(int i=1;i<=n;i++)
        in>>v[i];
    int m,t,x,poz;
    in>>m;
    for(int i=0;i<m;i++)
    {
        in>>t>>x;
        if(t==2)
            out<<cautb(x-1)+1<<endl;
        else
        {
            poz=cautb(x);
            if(t==0 && v[poz]!=x)
                out<<-1<<endl;
            else
                out<<poz<<endl;
        }
    }
    return 0;
}