using System;
 
public class Test
{
	public static void Main()
	{
		int a;
		string n;
		int[] ar = new int[10];
		a=0;
		//Console.WriteLine(Console.BufferHeight);
		while (!String.IsNullOrEmpty(n = Console.ReadLine())){
			//Console.WriteLine("{0}",n);
			ar[a]=int.Parse(n);
			a++;
			}
			Console.WriteLine("{0}",ar.Length);
		for(int j=0;j<ar.Length-1;j++){
			for(int k=j+1;k<ar.Length-1;k++){
				int tmp;
				if(ar[j]<ar[k]){
					tmp=ar[j];
					ar[j]=ar[k];
					ar[k]=tmp;
						}
				}
			}
		for(int ans=0;ans<ar.Length-1;ans++)
			Console.WriteLine("{0}",ar[ans]);
 
	}
}

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