Cod sursa(job #2795263)

Utilizator OrosIacobOros Iacob OrosIacob Data 6 noiembrie 2021 10:19:28
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.78 kb
#include <iostream>
#include <fstream>
using namespace std;

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

int n, a[100005], m,x,t,i,p=1,l;
void rez0si1()
{


    for(i=0,l=p; l>0; l>>=1)
        if(i+l<=n && a[i+l]<=x)
            i+=l;
    if(t==0)
    {
    if(a[i]!=x)
        g<<-1<<'\n';
    else
        g<<i<<'\n';
    }
    if(t==1)
        g<<i<<'\n';
}
void rez2()
{
    for(i=n, l=p; l>0; l>>=1)
        if(i-l>0 && a[i-l]>=x)
        i-=l;
    g<<i<<'\n';
}
int main()
{
    f>>n;
    for(int i=1;i<=n;i++)
        f>>a[i];
    f>>m;
    while(n>=p)
       p <<= 1;
    for(int i=1; i<=m; i++)
    {
        f>>t>>x;
        if(t==0 || t==1)
            rez0si1();
        if(t==2)
            rez2();
    }
    return 0;
}