-module(z).
-export([x/1]).

x([<<107,97,116,121>>]) ->
    K = fun(N) -> lists:map(fun(C) -> C bxor 42 end, N) end,
    H = [
        [229,231,237,239,241,243,245,247,249,251],
        [253,255,257,259,261,263,265,267,269,271],
        [273,275,277,279,281,283,285,287,289,291]
    ],
    M = K([200,234,252,196,230,248,202,236,254,198,232,250]),
    lists:foreach(fun(L) ->
        io:format("~s~n", [
            lists:map(fun(C) -> C - 200 end, L)
        ])
    end, H),
    ok;
x(_) -> ok.