Cod sursa(job #1949783)

Utilizator watfa2017claudiu watfa2017 Data 2 aprilie 2017 13:11:28
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.17 kb
//
//  main.cpp
//  cautare binara
//
//  Created by Claudiu on 02.04.2017.
//  Copyright © 2017 Claudiu. All rights reserved.
//

#include <iostream>
#include <fstream>
using namespace std;
ifstream in("cautbin.in");
ofstream out("cautbin.out");
int v[100001],li,ls,mij,n,x;
int cautbin0()
{
    li=1;
    ls=n;
    while(li<=ls)
    {
        mij=(li+ls)/2;
        if(v[mij]<=x)
            li=mij+1;
        else
            ls=mij-1;
    }
    if(v[ls]==x)
        return ls;
    return -1;
}

int cautbin1()
{
    li=1;
    ls=n;
    while(li<=ls)
    {
        mij=(li+ls)/2;
        if(v[mij]<=x)
            li=mij+1;
        else
            ls=mij-1;
    }
    return ls;
}

int cautbin2()
{
    li=1;
    ls=n;
    while(li<=ls)
    {
        mij=(li+ls)/2;
        if(v[mij]>=x)
            ls=mij-1;
        else li=mij+1;
        
    }
    return li;
}

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