#include <iostream>
using namespace std;
int findNextR(int l, int size, int *arr) {
for (int i = l; i < size; ++i) {
if (arr[i] < 0)
return i;
}
return size - 1;
}
int partition(int l, int r, int *arr) {
long pivot = arr[(l + r) / 2];
while (l <= r) {
while (arr[r] > pivot)
r--;
while (arr[l] < pivot)
l++;
if (l <= r) {
long tmp = arr[r];
arr[r] = arr[l];
arr[l] = tmp;
l++;
r--;
}
}
return l;
}
void quickSort(int size, int *arr) {
int l = 0;
int r = size - 1;
int q, i = 0;
int tmpr = r;
while (true) {
i--;
while (l < tmpr) {
q = partition(l, tmpr, arr);
arr[tmpr] = -arr[tmpr];
tmpr = q - 1;
++i;
}
if (i < 0)
break;
l++;
tmpr = findNextR(l, size, arr);
arr[tmpr] = -arr[tmpr];
}
}
int main() {
int size;
cin >> size;
int *arr = new int[size];
quickSort(size, arr);
return 0;
}
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