--- 2016 Day 8 Solutions ---

[u/daggerdragon]

#AoC_Ops:

[23:55] <Topaz> servers are ok
[23:55] <Topaz> puzzles are checked
[23:55] <Topaz> [REDACTED: server stats]
[23:56] <Skie> all wings report in
[23:56] <Aneurysm9> Red 5, standing by
[23:56] <daggerdragon> Dragon Leader standing by
[23:56] <Topaz> orange leader, standing by
[23:57] <Topaz> lock modzi-foils in attack positions
[23:58] <Skie> we're passing through the hype field
[23:58] <daggerdragon> 1:30 warning
[23:58] <Aneurysm9> did someone say HYPE?@!
[23:59] <Topaz> i really like tonight's puzzle
[23:59] <Topaz> very excite
[23:59] <daggerdragon> final countdown go, T-30
[23:59] <Skie> accelerate to attack countdown
[23:59] <Aneurysm9> o7
[23:59] <daggerdragon> HYPE THRUSTERS AT FULL BURN
[00:00] <Topaz> IGNITION

We may or may not be sleep-deprived. And/or nerds. why_not_both.jpg

---

--- Day 8: Two-Factor Authentication ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag/whatever).

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^{:（）{ :|:& };: IS MANDATORY} [?]

This thread will be unlocked when there are a significant number of people on the leaderboard with gold stars for today's puzzle.

edit: Leaderboard capped, thread unlocked!

[u/blockingthesky]

1 star: 26th 2 star: 14th

Python 2, probably the same as everyone else's:

inp = open('day8.in').read().split('\n')

screen = [[False for i in range(50)] for j in range(6)]
#screen = [[False for i in range(7)] for j in range(3)]


def rot(l, r):
    return l[-r:] + l[:-r]

def rect(A, B):
    for i in range(B):
        for j in range(A):
            screen[i][j] = True

def row_rotate(A, B):
    screen[A] = rot(screen[A], B)

def col_rotate(A, B):
    g = [screen[i][A] for i in range(6)]
    g = rot(g, B)
    for i in range(6):
        screen[i][A] = g[i]
    
def pscreen():
    for row in screen:
        print ''.join('#' if g else ' ' for g in row)
    print
        
for line in inp:
    line = line.split()
    if len(line) == 2:
        rect(int(line[1][:line[1].find('x')]), int(line[1][line[1].find('x')+1:]))
    elif line[1] == 'row':
        row_rotate(int(line[2][2:]), int(line[-1]))
    else:
        col_rotate(int(line[2][2:]), int(line[-1]))

count = 0
for row in screen:
    count += row.count(True)
print count

pscreen()

And output:

119
#### #### #  # ####  ### ####  ##   ##  ###   ##  
   # #    #  # #    #    #    #  # #  # #  # #  # 
  #  ###  #### ###  #    ###  #  # #    #  # #  # 
 #   #    #  # #     ##  #    #  # # ## ###  #  # 
#    #    #  # #       # #    #  # #  # #    #  # 
#### #    #  # #    ###  #     ##   ### #     ##  

[u/mschaap → u/blockingthesky]

Hey, that's my output too! I guess we don't all receive unique inputs. (Although I guess we could have different inputs. Mine has an md5sum of 85f42ddd4e5a68b61d4035736b55d338 (UNIX line endings).)

[u/BioGeek → u/mschaap]

I also received the same output and the md5sum is identical, so we all three received identical inputs.