#nullable enable

#region
var (_input, _iter) = (Array.Empty<string>(), 0);
T I<T>() where T : IParsable<T>
{
    while (_iter >= _input.Length) (_input, _iter) = (Console.ReadLine()!.Trim().Split(' '), 0);
    return T.Parse(_input[_iter++], null);
}
#endregion

static T[] Range<T>(int n, Func<T> F) => Enumerable.Range(0, n).Select(_ => F()).ToArray();

var n = I<int>();
var sz = Range(n, I<string>);
var i = 0;
var j = sz[0].Length - 1;
var d = 1;
while (true)
{
    if (sz[i + d][j] == '.')
    {
        Console.WriteLine("KCPC");
        return;
    }
    if (sz[i][j - d] == '.')
    {
        Console.WriteLine("KUPC");
        return;
    }
    d++;
}