Cod sursa(job #1826569)

Utilizator andreiugravuFMI Andrei Zugravu andreiugravu Data 10 decembrie 2016 17:03:51
Problema Sortare prin comparare Scor 80
Compilator cpp Status done
Runda Arhiva educationala Marime 1.15 kb
//Arbori de intervale - Sortare

#include <fstream>
#include <climits>

using namespace std;

ifstream fin("algsort.in");
ofstream fout("algsort.out");

#define DMAX 500000

int N;
int ArbInt[DMAX*4];

void update(int nod, int st, int dr, int poz, int val) {
    if(st == dr) {
        ArbInt[nod] = val;
        return;
    }

    int mid = (st + dr)/2;
    if(poz <= mid)
        update(2*nod, st, mid, poz, val);
    else
        update(2*nod + 1, mid + 1, dr, poz, val);

    ArbInt[nod] = min(ArbInt[2*nod], ArbInt[2*nod + 1]);
}


int query(int nod, int st, int dr, int val) {
    if(st == dr)
        return st;

    int mid = (st + dr)/2;
    if(ArbInt[2*nod] == val)
        return query(2*nod, st, mid, val);
    else
        return query(2*nod + 1, mid + 1, dr, val);
}

int main()
{
    int i;
    int x;

    fin>>N;
    for(i = 1 ; i <= N ; i++) {
        fin>>x;
        update(1, 1, N, i, x);
    }

    for(i = 1 ; i <= N ; i++) {
        fout<<ArbInt[1]<<" ";
        x = query(1, 1, N, ArbInt[1]);
        update(1, 1, N, x, INT_MAX);
    }

    fin.close();
    fout.close();

    return 0;
}