How to produce 100 with only four 3s and mathematical symbols

Question

An approach like this doesn't count!

       $\underset{k \in \mathbb N, k \leq (3+3/3)} {\sum k^3}$

Thanks for your answers but I need something more strong...
You are only allowed to use +, -, *, /, !, (, ), ^ and sqrt !

Answer 1

$3 \times 33.\dot3{}{}{}{}{}{}{}{}{}{}$

Answer 2

$\dfrac{33}{33\%} = \dfrac{33}{.33}{}{}{}{}{}{}{}{}{}$

Answer 3

$(\dfrac{ 3}{ .3})^\dfrac{3!}{3}$.

Answer 4

$\lceil33\times3+\log3\rceil{}{}{}{}{}{}{}$