using System;
using System.Collections;
public class Starter {
public static void Main(string[] argv) {
ArrayList al1 = new ArrayList();
foreach (string arg in argv) {
al1.Add(int.Parse(arg));
}
al1.Sort();
ArrayList al2 = (ArrayList)al1.Clone();
for (int count = 0; count < al2.Count; ++count) {
al2[count] = ((int)al2[count]) * 2;
}
foreach (int number in al2) {
Console.WriteLine(number);
}
}
}