Combine AoC Repos

2015/day23/problem

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+                                           Advent of Code
+
+   br0xen 43*
+
+     • [About]
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+
+--- Day 23: Opening the Turing Lock ---
+
+   Little Jane Marie just got her very first computer for Christmas from some unknown benefactor.
+   It comes with instructions and an example program, but the computer itself seems to be
+   malfunctioning. She's curious what the program does, and would like you to help her run it.
+
+   The manual explains that the computer supports two registers and six instructions (truly, it
+   goes on to remind the reader, a state-of-the-art technology). The registers are named a and b,
+   can hold any non-negative integer, and begin with a value of 0. The instructions are as
+   follows:
+
+     • hlf r sets register r to half its current value, then continues with the next instruction.
+     • tpl r sets register r to triple its current value, then continues with the next
+       instruction.
+     • inc r increments register r, adding 1 to it, then continues with the next instruction.
+     • jmp offset is a jump; it continues with the instruction offset away relative to itself.
+     • jie r, offset is like jmp, but only jumps if register r is even ("jump if even").
+     • jio r, offset is like jmp, but only jumps if register r is 1 ("jump if one", not odd).
+
+   All three jump instructions work with an offset relative to that instruction. The offset is
+   always written with a prefix + or - to indicate the direction of the jump (forward or
+   backward, respectively). For example, jmp +1 would simply continue with the next instruction,
+   while jmp +0 would continuously jump back to itself forever.
+
+   The program exits when it tries to run an instruction beyond the ones defined.
+
+   For example, this program sets a to 2, because the jio instruction causes it to skip the tpl
+   instruction:
+
+ inc a
+ jio a, +2
+ tpl a
+ inc a
+
+   What is the value in register b when the program in your puzzle input is finished executing?
+
+   Your puzzle answer was 255.
+
+   The first half of this puzzle is complete! It provides one gold star: *
+
+--- Part Two ---
+
+   The unknown benefactor is very thankful for releasi-- er, helping little Jane Marie with her
+   computer. Definitely not to distract you, what is the value in register b after the program is
+   finished executing if register a starts as 1 instead?
+
+   Although it hasn't changed, you can still get your puzzle input.
+
+   Answer: _____________________ [ [Submit] ]
+
+   You can also [Shareon Twitter Google+ Reddit] this puzzle.
+
+References
+
+   Visible links
+   . http://adventofcode.com/
+   . http://adventofcode.com/about
+   . http://adventofcode.com/stats
+   . http://adventofcode.com/leaderboard
+   . http://adventofcode.com/settings
+   . http://adventofcode.com/auth/logout
+   . https://en.wikipedia.org/wiki/Processor_register
+   . https://en.wikipedia.org/wiki/Instruction_set
+   . https://en.wikipedia.org/wiki/Natural_number
+   . http://adventofcode.com/day/23/input
+   . https://twitter.com/intent/tweet?text=I%27ve+completed+Part+One+of+%22Opening+the+Turing+Lock%22+%2D+Day+23+%2D+Advent+of+Code&url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F23&related=ericwastl&hashtags=AdventOfCode
+   . https://plus.google.com/share?url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F23
+   . http://www.reddit.com/submit?url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F23&title=I%27ve+completed+Part+One+of+%22Opening+the+Turing+Lock%22+%2D+Day+23+%2D+Advent+of+Code