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Cod sursa(job #378194)
#include<stdlib.h>
#include<cstdio>
using namespace std;
int i,a[500001];
void sort(int st,int dr)
{int j,piv,aux;
i=st;j=dr;piv=a[(st+dr)/2];
while(i<=j)
{
while (a[i]<piv) ++i;
while (a[j]>piv) --j;
if (i<=j)
{
aux=a[i];
a[i]=a[j];
a[j]=aux;
++i;--j;}
}
if (st<j) sort(st,j);
if (i<dr) sort(i,dr);
}
int main()
{int n;
freopen("algsort.in","r",stdin);
freopen("algsort.out","w",stdout);
scanf("%d",&n);
for (i=1;i<=n;i++)
scanf("%d",&a[i]);
sort(1,n);
for (i=1;i<=n;i++)
printf("%d ",a[i]);
return 0;
}