Cod sursa(job #3125162)

Utilizator Cazacu2006RazvanRazvan Cazacu Cazacu2006Razvan Data 2 mai 2023 10:01:39
Problema Statistici de ordine Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.78 kb
#include <fstream>

using namespace std;
ifstream fin("sdo.in");
ofstream fout("sdo.out");
int n,k;
unsigned int v[4000001];
 int piv( int st, int dr)
{
     int sst=0,ddr=1;
     int mid=(st+dr)/2;
     swap(v[st],v[mid]);
    while(st<dr)
    {
        if(v[st]>v[dr])
        {
            swap(v[st],v[dr]);
            sst=1-sst;
            ddr=1-ddr;
        }
        st+=sst;
        dr-=ddr;
    }
    return st;
}
void imp( int st,int dr)
{
   int mid=piv(st,dr);
    if(mid==k)
    {
        fout<<v[mid]<<" ";
    }
    else
    {
         if(k<=mid-1)
        imp(st,mid-1);
    else
        imp(mid+1,dr);
    }

}
int main()
{
    fin>>n>>k;
    for(int i=1;i<=n;i++)
    {
        fin>>v[i];
    }
    imp(1,n);

    return 0;
}