Cod sursa(job #1349690)

Utilizator Pintilie_AndreiFII-Pintilie Andrei Pintilie_Andrei Data 20 februarie 2015 13:23:26
Problema Schi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.51 kb
#include <fstream>

using namespace std;

int a[30005], aib[30005], n, t[30005];

void Citire()
{
    ifstream fin("schi.in");
    fin >> n;
    for (int i = 1; i <= n; i++)
        fin >> a[i];
    fin.close();
}

void Update(int i, int x)
{
    //int k;
    while (i <= n)
    {
        aib[i] += x;
        //k = 0;
        //while (((i >> k) & 1)==0)
        //    k++;
        //i = i + (1 << k);
        i = i + (i & (-i));
    }
}

int Query(int i)
{
    int s = 0;
    while (i > 0)
    {
        s += aib[i];
        i = i - (i & (-i));
    }
    return s;
}

///cauta cea mai mica pozitie p
/// care are suma Query(p) = x
int Cauta(int x)
{
    int sol, st, dr, mij, val;
    st = 1; dr = n; sol = -1;
    while (st <= dr)
    {
        mij = (st + dr) / 2;
        val = Query(mij);
        if (val == x)
        {
            sol = mij;
            dr = mij - 1;
        }
        else if (val > x) dr = mij - 1;
        else st = mij + 1;
    }
    return sol;
}

void InitAIB()
{
    int i;
    for (i = 1; i <= n; i++)
        Update(i, 1);
}

void Rezolva()
{
    int i, poz, x;
    for (i = n; i >= 1; i--)
    {
        x = a[i];
        poz = Cauta(x);
        t[poz] = i;
        Update(poz, -1);
    }
}

void Afisare()
{
    ofstream fout("schi.out");
    for (int i = 1; i <= n; i++)
        fout << t[i] << "\n";
    fout.close();
}

int main()
{
    Citire();
    InitAIB();
    Rezolva();
    Afisare();
    return 0;
}