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-module(problem56).
-export([solve/0]).
solve() ->
lists:max(gen_sums(99)).
gen_sums(M) ->
[digital_sum(X) || X <- gen_list(M)].
gen_list(M) ->
L = lists:seq(1,M),
[pow(A,B) || A <- L, B <- L].
digital_sum(Number) when is_integer(Number) ->
digital_sum(integer_to_list(Number));
digital_sum([]) ->
0;
digital_sum([H|T]) ->
(H-48) + digital_sum(T).
pow(_,0) ->
1;
pow(B,1) ->
B;
pow(B,E) ->
B * pow(B,E-1).
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