Cod sursa(job #2283574)

Utilizator miha5092mihai mitrea miha5092 Data 15 noiembrie 2018 17:33:33
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.12 kb
#include <fstream>

using namespace std;

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

const int L=16;
int n,v[100005];

int caut0(int x)
{
    int r=0,pas=1<<L;
    while(pas!=0)
    {
        if(r+pas<=n && v[r+pas]<=x)
        {
            r+=pas;
        }
        pas/=2;
    }
    if(v[r]!=x)
    {
        r--;
    }
    return r;
}

int caut1(int x)
{
    int r=0,pas=1<<L;
    while(pas!=0)
    {
        if(r+pas<=n && v[r+pas]<=x)
        {
            r+=pas;
        }
        pas/=2;
    }
    return r;
}

int caut2(int x)
{
    int r=0,pas=1<<L;
    while(pas!=0)
    {
        if(r+pas<=n && v[r+pas]<x)
        {
            r+=pas;
        }
        pas/=2;
    }
    r++;
    return r;
}

int main()
{
    in>>n;
    for(int i=1; i<=n; i++)
    {
        in>>v[i];
    }
    int m;
    in>>m;
    for(int i=0; i<m; i++)
    {
        int x,t;
        in>>x>>t;
        if(x==0)
            out<<caut0(t)<<"\n";
        else if(x==1)
            out<<caut1(t)<<"\n";
        else
            out<<caut2(t)<<"\n";
    }
    return 0;
}