Cod sursa(job #2639910)

Utilizator proflaurianPanaete Adrian proflaurian Data 4 august 2020 14:24:51
Problema Statistici de ordine Scor 60
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.71 kb
#include <bits/stdc++.h>

using namespace std;
ifstream f("sdo.in");
ofstream g("sdo.out");
const int N = 3000010;
int n,k,x[N];
void sorteaza(int,int);
int main()
{
    f>>n>>k;
    for(int i=1;i<=n;i++)
        f>>x[i];
    sorteaza(1,n);
    g<<x[k];
    return 0;
}
void sorteaza(int lo,int hi)
{
    if(lo>=hi)
        return;
    int st=lo;
    int dr=hi;
    int mi=(lo+hi)/2;
    int pivot = x[mi];
    do
    {
        while(x[st]<pivot)
            st++;
        while(x[dr]>pivot)
            dr--;
        if(st<=dr)
        {
            swap(x[st],x[dr]);
            st++;
            dr--;
        }
    }
    while(st<=dr);
    sorteaza(lo,dr);
    sorteaza(st,hi);
}