static void Main(string[] args)
{
StreamReader srd = null;
StreamWriter swr = null;
Env env = new Env();
try
{
srd = new StreamReader(
args[0], Encoding.GetEncoding("Shift_JIS"));
env.srd = srd;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
try
{
swr = new StreamWriter(
args[1], false, Encoding.GetEncoding("Shift_JIS"));
env.swr = swr;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
probLoop(env);
swr.Close();
}
static void probCore(long T, Env env)
{
string line = env.srd.ReadLine();
string[] parts = line.Split(Env.delim, StringSplitOptions.None);
ulong A = UInt64.Parse(parts[0]);
ulong[] n = new ulong[A];
for (ulong i = 0; i < A; i++)
{
n[i] = UInt64.Parse(parts[i + 1]);
}
//subset current = new subset(A);
bool[] current = new bool[A];
current[0] = true;
for (ulong i = 1; i < A; i++)
{
current[i] = false;
}
Dictionary<ulong, bool[]> dict = new Dictionary<ulong, bool[]>();
while (true)
{
//subsetのsumを出す。
ulong subsum = 0;
for (ulong i = 0; i < A; i++)
{
if (current[i])
{
subsum = subsum + n[i];
}
}
if (dict.ContainsKey(subsum))
{
//見つかった
env.swr.WriteLine("Case #{0}:", T);
{
bool flag = false;
for (ulong i = 0; i < A; i++)
{
if (current[i])
{
if (flag)
{
env.swr.Write(" {0}", n[i]);
}
else
{
env.swr.Write("{0}", n[i]);
flag = true;
}
}
}
}
env.swr.WriteLine();
current = dict[subsum];
{
bool flag = false;
for (ulong i = 0; i < A; i++)
{
if (current[i])
{
if (flag)
{
env.swr.Write(" {0}", n[i]);
}
else
{
env.swr.Write("{0}", n[i]);
flag = true;
}
}
}
}
env.swr.WriteLine();
return;
}
else
{
bool[] current2 = new bool[A];
current.CopyTo(current2, 0);
dict.Add(subsum, current2);
bool carry = true;
for (ulong i = 0; i < A; i++)
{
if (carry)
{
carry = current[i];
current[i] = !current[i];
}
}
if (carry)
{
env.swr.WriteLine("Case #{0}: Impossible", T);
}
}
}
}
static void probLoop(Env env)
{
string line = env.srd.ReadLine();
Stopwatch sw = new Stopwatch();
sw.Start();
long t = Int64.Parse(line);
for (long i = 1; i <= t; i++)
{
probCore(i, env);
}
sw.Stop();
long millisec = sw.ElapsedMilliseconds;
Console.WriteLine("used:{0}[ms]", millisec);
}