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#include <fstream>
#include <cstdlib>
#include <ctime>
using namespace std;
const int N = 5e5;
int v[N];
/*
int part(int v[], int st, int dr)
{
int p = st;
for (int i = st; i < dr; i++)
{
if (v[i] <= v[dr])
{
swap(v[i], v[p++]);
}
}
swap(v[p], v[dr]);
return p;
}
void qs(int v[], int st, int dr)
{
if (st == dr)
{
return;
}
int p = part(v, st, dr);
if (st < p)
{
qs(v, st, p - 1);
}
if (p < dr)
{
qs(v, p + 1, dr);
}
}
*/
void part3w(int v[], int st, int dr, int &p1, int &p2)
{
int i = st;
p1 = st;
p2 = dr - 1;
while (i <= p2)
{
if (v[i] < v[dr])
{
swap(v[i++], v[p1++]);
}
else if (v[i] > v[dr])
{
swap(v[i], v[p2--]);
}
else
{
i++;
}
}
swap(v[dr], v[++p2]);
}
void qs3p(int v[], int st, int dr)
{
if (st == dr)
{
return;
}
int p1, p2;
part3w(v, st, dr, p1, p2);
if (st < p1)
{
qs3p(v, st, p1 - 1);
}
if (p2 < dr)
{
qs3p(v, p2 + 1, dr);
}
}
void shuffle(int v[], int n)
{
srand(time(NULL));
///face ca la fiecare rulare sa fie amestecate altfel
for (int i = n - 1; i > 0; i--)
{
int p = rand() % (i + 1);
swap(v[i], v[p]);
}
}
int main()
{
ifstream in("algsort.in");
ofstream out("algsort.out");
int n;
in >> n;
for (int i = 0; i < n; i++)
{
in >> v[i];
}
shuffle(v, n);
qs3p(v, 0, n - 1);
for (int i = 0; i < n; i++)
{
out << v[i] << " ";
}
in.close();
out.close();
return 0;
}