Cod sursa(job #2778242)

Utilizator Cochior_Iuliacochior iulia-stefana Cochior_Iulia Data 30 septembrie 2021 20:34:32
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.56 kb
#include<iostream>
#include<fstream>
using namespace std;

ifstream f("cautbin.in");
ofstream g("cautbin.out");

int n,v[100001],x,m,k,st,dr,mij,sol;

int main()
{
    f>>n;
    for(int i=1;i<=n;i++)
        f>>v[i];
    f>>m;
    for( ; m; m--)
    {
        f>>k>>x;
        st=1;
        dr=n;
        sol=-1;
        if(k==0)
        {
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]==x)
                {
                    sol=mij;
                    st=mij+1;
                }
                else
                    if(v[mij]<x)
                        st=mij+1;
                    else
                        dr=mij-1;
            }
            g<<sol<<'\n';
        }
        else
            if(k==1)
            {
                while(st<=dr)
                {
                    mij=(st+dr)/2;
                    if(v[mij]<=x)
                    {
                        sol=mij;
                        st=mij+1;
                    }
                    else
                        dr=mij-1;
            }
            g<<sol<<'\n';
            }
            else
            {
                while(st<=dr)
                {
                    mij=(st+dr)/2;
                    if(v[mij]>=x)
                    {
                        sol=mij;
                        dr=mij-1;
                    }
                    else
                        st=mij+1;
                }
                g<<sol<<'\n';
            }
    }
    return 0;
}