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Cod sursa(job #846491)
#include <stdio.h>
#include <algorithm>
#include <cmath>
#include <cctype>
#include <cstring>
#include <vector>
#include <deque>
using namespace std;
#define Max 500001
int n,a[Max];
void qsort(int lf,int rt)
{
int i=lf,j=rt,p=a[(lf+rt)/2];
while(i<j)
{
while(a[i]<p)i++;
while(a[j]>p)j--;
if(i<=j)
{
swap(a[i],a[j]);
i++;
j--;
}
}
if(j>lf)qsort(lf,j);
if(i<rt)qsort(i,rt);
}
int main()
{
freopen("algsort.in","r",stdin);
freopen("algsort.out","w",stdout);
scanf("%d",&n);
for(int i=1;i<=n;i++)scanf("%d",&a[i]);
qsort(1,n);
for(int i=1;i<=n;i++)printf("%d ",a[i]);
return 0;
}