Cod sursa(job #1956380)

Utilizator the.manIon Man the.man Data 6 aprilie 2017 18:25:22
Problema Order Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.85 kb
#include <fstream>
using namespace std;
ifstream fi("order.in");
ofstream fo("order.out");
int n, a[30001];

void Update(int x,int v)
{
    for (int i=x; i <= n; i += i&-i)
        a[i]+=v;
}
int Query(int x)
{
    int s = 0;
    for (int i=x ; i>=1; i -=i&-i) s += a[i];
    return s;
}
int Search(int x)
{
     int st = 1, dr = n, mij;
        while (st < dr)
            {
            int mij = (st + dr) / 2;
            int nr=Query(mij);
            if ( nr < x) st = mij+1;
                    else dr = mij;
            }
    return st;
}

int main() {

    fi>> n;
    for (int i=1;i<= n;i++) Update(i,1);
    for (int i = 1,x = 2; i <= n; i++)
        {
        x = (x - 1 + i) % (n - i + 1);
        if (x == 0) x = n - i + 1;

        int poz=Search(x);
        Update(poz,-1);
        fo<< poz << " ";
    }
}