Cod sursa(job #2486027)

Utilizator tomaionutIDorando tomaionut Data 2 noiembrie 2019 11:23:19
Problema Schi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.22 kb
#include <bits/stdc++.h>

using namespace std;

int n,aib[30005],cls[30005],a[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;
}

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


    return 0;
}