public class example{
	public static void sort(Comparable[] a)
        { /*排序算法*/}

	private static boolean less(Comparable v, Comparable w)
	{ return v.Comparable(w) < 0; }

	private static void exch(Comparable[] a, int i, intj )
	{Comparable t = a[i]; a[i] = a[j]; a[j] = t; }

	private static void show(Comparable[] a)
	{ 
		for(int i = 0; i < a.length; i++)
			StdOut.print(a[i] + " " );
		StdOut.println();
	}

	public static boolean isSorted(Comparable[] a)
	{
		for(int i = 1; i < a.length)
			if( less(a[i],a[i-1]) ) return false;
		return true;	
	}

	public static void main(String[] args)
	{
		String[] a = In.readStrings();
		sort(a);
		assert isSorted(a);
		show(a);
	}
}