Cod sursa(job #2279448)

Utilizator HappyFox_12Antonia Onisoru HappyFox_12 Data 9 noiembrie 2018 16:28:50
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.09 kb
#include <fstream>

using namespace std;

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

const int N = 100001;
const int L = 16;
int v[N], n;

int caz0(int x)
{
    int r=0,pas=1<<L;
    while(pas!=0)
    {
        if(r+pas<=n && v[pas+r]<=x){
            r+=pas;
        }
        pas/=2;
    }
    if(v[r]!=x){
        r=-1;
    }
    return r;
}

int caz1(int x)
{
    int r=0,pas=1<<L;
    while(pas!=0)
    {
        if(r+pas<=n && v[pas+r]<=x){
            r+=pas;
        }
        pas/=2;
    }
    return r;
}

int caz2(int x)
{
    int r=0,pas=1<<L;
    while(pas!=0)
    {
        if(r+pas<=n && v[pas+r]<x){
            r+=pas;
        }
        pas/=2;
    }
    r++;
    return r;
}

int main()
{
    in>>n;
    for(int i=1;i<=n;i++)
        in>>v[i];
    int m,tip,val;
    in>>m;
    for(int i=1;i<=m;i++){
        in>>tip>>val;
        if(tip==0)
            out<<caz0(val)<<'\n';
        if(tip==1)
            out<<caz1(val)<<'\n';
        if(tip==2)
            out<<caz2(val)<<'\n';
        }
    return 0;
}