Cod sursa(job #2314182)

Utilizator IordachescuAncaFMI Iordachescu Anca Mihaela IordachescuAnca Data 8 ianuarie 2019 00:25:53
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.37 kb
#include <fstream>
#include<limits.h>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int v[500004], ai[20000005];

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

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

int main()
{
    int N,i;
    fin>>N;
    for(i=1;i<=N;i++)
    {
        fin>>v[i];
    }

    build(1,1,N);

    for(i=1;i<=N;i++)
    {
        fout<<v[ai[1]]<<" ";
        v[ai[1]]=INT_MAX;
        update(1,ai[1],1,N);
    }
    fin.close();
    fout.close();
    return 0;
}