Cod sursa(job #880703)

Utilizator ionutz_cnnbIonutz cnnb ionutz_cnnb Data 17 februarie 2013 09:43:26
Problema Farfurii Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.7 kb
#include <fstream>
#include <iostream>
using namespace std;

int main()
{
    long n,k,i,m,p,p1;
    ifstream f("farfurii.in");
    ofstream g("farfurii.out");
    f>>n>>k;
    for(p=1;p<n;p*=2)
    {
        p1=p;
        for(m=0;p1>0;p1/=2)
        {
            if(m+p1<=n&&(m+p1)*(m+p1-1)<=2*k) m+=p1;
        }
    }
    k-=m*(m-1)/2;
    if(!k)
    {
        for(i=1;i<=n-m;i++) g<<i<<" ";
        for(i=n;i>n-m;i--) g<<i<<" ";
        g<<'\n';
    }
    else
    {
        k=m-k;
        m++;
        for(i=1;i<=n-m;i++)
        {
            g<<i<<" ";
        }
        g<<n-k<<" ";
        for(i=n;i>n-k;i--) g<<i<<" ";
        for(i=n-k-1;i>n-m;i--) g<<i<<" ";
        g<<'\n';
    }
    return 0;
}