Task
Given an \$m\times n\$ binary ascii "photo", return the negative of the photo
Example:
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# #
# #
# #
#
->
## ##
# # #
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# # #
## ##
General rules:
This is code-golf, so the shortest answer in bytes wins
Standard rules and default I/O rules apply
Your output characters must...
Long period primes
code-golfprimessequence
A long period prime is a prime number \$p\$ such that decimal expansion of \$1/p\$ has period of length \$(p-1)\$.
This is A006883, or A001913 with prepended \$2\$.
Rules
This is a standard code-golfsequence challenge, so please comply with the defaults....
Your task is to create an approximation for sin(x) in the fewest characters possible.
Given the approximation s(x), it must satisfy 0.95 * sin(x) <= s(x) <= 1.05 * sin(x)
The entry with the fewest characters wins.
