Cod sursa(job #2721998)

Utilizator AndreiD31Dragan Andrei AndreiD31 Data 12 martie 2021 15:41:46
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.09 kb
#include <bits/stdc++.h>

using namespace std;

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

int n,i,c,x,p,m,u,mij,poz,v[100100];

int main()
{
    f>>n;
    for(i=1;i<=n;i++)f>>v[i];
    f>>m;
    for(i=1;i<=m;i++)
    {
        f>>c>>x;
        if(c==0)
        {
            p=1;u=n;poz=-1;
            while(p<=u)
            {
                mij=(p+u)/2;
                if(v[mij]<=x)poz=mij,p=mij+1;
                else u=mij-1;
            }

            if(v[poz]==x)g<<poz<<'\n';
            else g<<-1<<'\n';
        }
        else if(c==1)
        {
            p=1;u=n;poz=-1;
            while(p<=u)
            {
                mij=(p+u)/2;
                if(v[mij]<=x)poz=mij,p=mij+1;
                else u=mij-1;
            }
            g<<poz<<'\n';
        }
        else
        {
            p=1;u=n;poz=-1;
            while(p<=u)
            {
                mij=(p+u)/2;
                if(v[mij]>=x)poz=mij,u=mij-1;
                else p=mij+1;
            }
            g<<poz<<'\n';
        }
    }
    return 0;
}