Cod sursa(job #1151669)

Utilizator flamey19Savu Daniel flamey19 Data 24 martie 2014 11:51:42
Problema Order Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.04 kb
#include <fstream>
#define zero(x) (x&(-x))
using namespace std;
ifstream f("order.in");
ofstream g("order.out");
int n, sol[30010], aib[30010];
void update (int poz, int val)
{
    int i;
    for (i=poz;i<=n;i+=zero(i))
    aib[i]+=val;
}
int query (int poz)
{
    int i,s=0;
    for(i=poz; i>=1; i-=zero(i))
        s+=aib[i];
    return s;
}
int cb(int x)
{
    int st,dr,m,s,Min=30010;
    st=1; dr=n;
    while(st<=dr)
    {
        m=(st+dr)/2;
        s=query(m);
        if(s==x && m<Min) Min=m;
        else if(s>=x) dr=m-1;
        else st=m+1;
    }
    return Min;
}

int main ()
{
   f>>n;
    int i,poz,elim,m;
    for(i=1;i<=n;i++)
    {
        update(i,1);
    }
    poz=2;
    m=n-1;
    int j=1;
    for (i=1;i<=n;i++)
    {
        elim=cb(poz);
        update (elim,-1);
        sol[j]=elim;
        j++;
        poz+=i;
        if(poz>m && i!=n) poz%=m;
       if(poz==0 && i!=n) poz=m;
      m--;

    }
    for (i=1;i<=n;i++)
    {
        g<<sol[i];
    }




    return 0;
}