Cod sursa(job #2567547)

Utilizator spartanul300Vasile Andrei spartanul300 Data 3 martie 2020 17:47:32
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.1 kb
#include <bits/stdc++.h>

using namespace std;

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

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

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