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Cod sursa(job #520716)
#include<cstdio>
#include<algorithm>
#include<vector>
using namespace std;
vector<int> v[100];
vector <int> :: iterator it,it1;
int a[500005];
int main()
{
int i,k,n,q,val,nr;
freopen("algsort.in","r",stdin);
freopen("algsort.out","w",stdout);
scanf("%d",&n);
for (i=1;i<=n;i++)
scanf("%d",&a[i]);
int p=4;
k=1<<p;
for (q=1;q<=31/p+1;++q)
{
for (i=1;i<=n;++i)
{
val=(a[i]>>(p*q-p));
val=val-((val>>p)<<p);
v[val].push_back(a[i]);
}
nr=0;
for (i=0;i<k;++i)
{
for (it=v[i].begin();it<v[i].end();++it)
a[++nr]=*it;
if (v[i].begin<v[i].end())
{
it=v[i].end();--it;
for (;it>v[i].begin();)
{
it1=it;
it.erase();
it=it1-1;
}
it.erase();
}
}
}
for (i=1;i<=n;i++)
printf("%d ",v[i])
return 0;
}