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Want more picoCTF 2019 writeups?
Convert 42 decimal to binary. Python's bin(42) gives '0b101010', answer is 101010.
Decode the Base64-encoded string bDNhcm5fdGgzX3IwcDM1 to recover the hidden flag, practicing a fundamental encoding scheme used throughout CTFs.
Use grep to find the picoCTF flag in a large text file. Reading it manually would be tedious.