Cod sursa(job #2065145)

Utilizator dianamichesaRosu Diana Michesa dianamichesa Data 13 noiembrie 2017 15:05:58
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.85 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
const int N=100001,L=16;
int n,m,x,k,v[N];
int intr1(int x)
{
    int pas=1<<L;
    int r=0;
    while(pas!=0){
        if(r+pas<=n && v[r+pas]<=x)
            r+=pas;
        pas/=2;
    }
    return r;
}
int intr3(int x)
{
    int pas=1<<L;
    int r=0;
    while(pas!=0){
        if(r+pas<=n && v[r+pas]<x)
            r+=pas;
        pas/=2;
    }
    return r+1;
}
int main()
{
    f>>n;
    for(int i=1;i<=n;i++)
        f>>v[i];
    f>>m;
    for(int i=1;i<=m;i++){
        f>>k>>x;
        if(k==0){
            int p=intr1(x);
            if(v[p]==x)
                g<<p<<'\n';
            else
                g<<-1;
        }
        if(k==1)
            g<<intr1(x)<<'\n';
        if(k==2)
            g<<intr3(x)<<'\n';
    }
    return 0;
}