Cod sursa(job #2108421)

Utilizator SmitOanea Smit Andrei Smit Data 18 ianuarie 2018 11:44:19
Problema Sortare prin comparare Scor 80
Compilator cpp Status done
Runda Arhiva educationala Marime 1.2 kb
#include <fstream>
#define INF 2000000000

using namespace std;

const int N=500005;
int arb[4*N+N/100],v[N];

void Update(int nod,int st ,int dr,int val,int poz)
{
    if(st==dr)
    {
        arb[nod]=val;
        return;
    }
    int mijl;
    mijl=(st+dr)/2;
    if(poz<=mijl)
        Update(nod*2,st,mijl,val,poz);
    else
        Update(nod*2+1,mijl+1,dr,val,poz);
    if(v[arb[nod*2]]<=v[arb[nod*2+1]])
        arb[nod]=arb[nod*2];
    else
        arb[nod]=arb[nod*2+1];
}

void Build(int nod,int st,int dr)
{
    if(st==dr)
    {
        arb[nod]=st;
        return;
    }
    int mij=(st+dr)/2;
    Build(nod*2,st,mij);
    Build(nod*2+1,mij+1,dr);
    if(v[arb[nod*2]]<=v[arb[nod*2+1]])
        arb[nod]=arb[nod*2];
    else
        arb[nod]=arb[nod*2+1];
}

void Citire()
{
    ifstream fin("algsort.in");
    ofstream fout("algsort.out");
    int n,i;
    fin>>n;
    for(i=1;i<=n;++i)
        fin>>v[i];
    fin.close();

    ///SOLUTIE
    v[0]=INF;
    Build(1,1,n);
    int poz;
    for(i=n;i>=1;--i)
    {
        poz=arb[1];
        fout<<v[poz]<<" ";
        Update(1,1,n,0,poz);
    }
    fout.close();
}

int main()
{
    Citire();
}