#include
#include
#include
#include
using namespace std;
int main()
{
vectornums(10);
for (auto &n : nums)
cin >> n;
sort(nums.begin(), nums.end());
copy(nums.begin(), nums.end(), ostream_iterator(cout, " "));
cout << endl;
for_each(nums.rbegin(), nums.rend(), [](int n){cout << n << " "; });
return 0;
}