FerumFlex

-module(second).
-export([hypo/2,area/2]).
-import(first, [mult/2,area/3,square/2]).


hypo(A,B) ->
    math:sqrt(first:square(A) + first:square(B)).


area(A,B) ->

FerumFlex

-module(first).
-export([double/1,mult/2,area/3,square/1,treble/1]).


mult(X,Y) ->
    X*Y.


double(X) ->
    mult(2,X).

FerumFlex

import copy
import time


class Stack:
    __slots__ = ['size', 'values']

    def __init__(self, values, size=4):
        self.values = list(filter(lambda item: item != '-', values))
        self.size = size