f:: Int -> Int
f n = 2^n

g:: Int-> Int
g a = a*a


sera:: Int -> Bool
sera 1 = True
sera 2 = True
sera 3 = True
sera 4 = True
sera 5 = True
sera z = False

jota:: Int -> Int -> Int
jota x y   | x>y   = 12
           | x==y  = 11
           | otherwise = 20

te:: Int -> Bool
te z       | z< 101 = True
             | otherwise = False