Cod sursa(job #843848)

Utilizator IoannaPandele Ioana Ioanna Data 28 decembrie 2012 15:33:08
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.25 kb
#include<fstream>
#define NMAX (1<<20)

using namespace std;
ifstream in("algsort.in");
ofstream out("algsort.out");

int n;
const unsigned int inf=(1u<<31)+1;
unsigned int v[NMAX];


void scan()
{
    in>>n;
}

void init()
{
    for (int i=1;i<=NMAX;i++)
    {
        v[i]=inf;
    }
}

void addToTree(int a,int st,int dr,int k,int p)
{
    if (st==dr)
    {
        v[k]=a;
        return;
    }
    int mij;
    mij=((st+dr)>>1);
    if (p<=mij)
    {
        addToTree(a,st,mij,(k<<1),p);
    }
    else addToTree(a,mij+1,dr,(k<<1)+1,p);
    if (v[(k<<1)]<v[(k<<1)+1])
        v[k]=v[k<<1];
    else v[k]=v[(k<<1)+1];
}

void add()
{
    int a;
    for (int i=1;i<=n;i++)
    {
        in>>a;
        addToTree(a,1,n,1,i);
    }
}

void elim(int k,int st,int dr)
{
    if (st==dr)
    {
        v[k]=inf;
        return;
    }
    if (v[(k<<1)]<v[(k<<1)+1])
        elim(k<<1,st,(st+dr)/2);
    else elim((k<<1)+1,(st+dr)/2+1,dr);
    if (v[(k<<1)]<v[(k<<1)+1])
        v[k]=v[(k<<1)];
    else v[k]=v[(k<<1)+1];
}
void sort()
{
    while (v[1]!=inf)
    {
        out<<v[1]<<" ";
        elim(1,1,n);
    }
}

int main()
{
    scan();
    init();

    add();
    sort();
    return 0;
}