Cod sursa(job #2486026)

Utilizator iustin948Homoranu Iustin iustin948 Data 2 noiembrie 2019 11:23:00
Problema Schi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.26 kb
#include <iostream>
#include <fstream>
using namespace std;
int n, aib[100005], a[30005], cls[30005];
ifstream fin("schi.in");
ofstream fout("schi.out");

void Update(int p, int x)
{
    while(p <= n)
    {
        aib[p] += x;
        p += (p & (-p));
    }
}

int Suma(int p)
{
    int s = 0;
    while(p > 0)
    {
        s += aib[p];
        p -= (p & (-p));
    }
    return s;
}
/// cauta cea mai din stanga pozitie poz suma a[1] + ... a[poz] = s
int CautBin(int p, int s)
{
    int st, dr, poz , mij;
    int suma;
    st = 1; dr = p; poz = -1;
    while(st <= dr)
    {
        mij = (st + dr) / 2;
        suma = Suma(mij);
        if(suma == s)
        {
            poz = mij;
            dr = mij - 1;
        }
        else if(suma > s) dr = mij - 1;
        else st = mij + 1;
    }
   return poz;
}

int main()
{
    int i, x, poz;
    fin >> n;
    for(int i = 1; i <= n; i++)
    {
        fin >> a[i];
        Update(i, 1);
    }

    for(i = n; i >= 1; i--)
    {
        x = a[i];
        /// caut cea mai din stanga poz cu suma(poz) = x
        poz = CautBin(n, x);
        Update(poz, -1);
        cls[poz] = i;
    }
    for(i = 1; i <= n; i++)
        fout << cls[i] << "\n";
    return 0;
}