Cod sursa(job #2092381)

Utilizator bebeetarepredescu bebeetare Data 21 decembrie 2017 16:36:40
Problema Order Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.01 kb
#include <fstream>
#define ub(x) (x&(-x))

using namespace std;
int j,z,aib[30005],b[30005],n,y,k;
ifstream f("order.in");
ofstream g("order.out");
void scade(int poz)
{
    int i;
    for(i=poz; i<=n; i=i+ub(i))
    {
        aib[i]--;
    }
}
int sum(int poz)
{
    int S=0,i;
    for(i=poz; i>0; i=i-ub(i))
    {
        S=S+aib[i];
    }
    return S;
}
int sebi(int val)
{
    int st,dr,x=n,m;
    st=1;
    dr=n;
    x=n+1;
    while(st<=dr)
    {
        m=(st+dr)/2;
        if(sum(m)==val && m<x)
        {
            x=m;
            dr=m-1;
        }
        else if(sum(m)>val) dr=m-1;
        else st=m+1;
    }
    return x;
}
int main()
{
    f>>n;
    for(j=1; j<=n; j++)
    {
        aib[j]=ub(j);
    }
    z=2;
    k=n;
    for(j=1; j<=n; j++)
    {
        y=sebi(z);
        scade(y);
        g<<y<<" ";
        k--;
        z=z+j;
        if(k)
        {
            if(z%k==0) z=k;
            else z=z%k;
        }
    }
    return 0;
}