Cod sursa(job #2047969)

Utilizator IVVladIon Vlad Vasile IVVlad Data 25 octombrie 2017 17:44:53
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.45 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int hi,lo,v[1000000],n,m,x,intr,mid,c;
int main()
{

    f>>n;
    for(int i=1; i<=n; i++)
    {
        f>>v[i];
    }
    f>>m;
    for(int i=1; i<=m; i++)
    {
        f>>intr>>x;

        if(intr==0)
        {
            lo=1;
            hi=n;
            while(hi>lo)
            {

                mid=lo+(hi-lo)/2;
                if(v[mid]==x) break;
                if(v[mid]>x) hi=mid-1;
                if(v[mid]<x) lo=mid+1;
            }
            while(v[mid+1]==x) mid++;
            g<<mid<<'\n';
        }
        if(intr==1)
        {
            lo=1;
            hi=n;
            mid=lo+(hi-lo)/2;
            while(hi>lo)
            {
                if(v[mid]<=x || v[mid+1]>x) {c=v[mid];break;}
                if(v[mid]<=x || v[mid+1]<=x) lo=mid+1;
                if(v[mid]>=x) hi=mid-1;
            }
            while(v[mid+1]==c) mid++;
            g<<mid<<'\n';
        }
        if(intr==2)
        {
            lo=1;
            hi=n;
            mid=lo+(hi-lo)/2;
            while(hi>lo)
            {
                if(v[mid]>=x || v[mid-1]<x) {c=v[mid];break;}
                if(v[mid]>=x || v[mid-1]>=x) lo=mid+1;
                if(v[mid]>=x) hi=mid-1;
            }
            while(v[mid-1]==c) mid--;
            g<<mid<<'\n';
        }
    }
    return 0;
}