Advent of Code 2016 Complete

2016/day25/problem

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+Advent of Code
+
+--- Day 25: Clock Signal ---
+
+   You open the door and find yourself on the roof. The city sprawls away from you for miles and miles.
+
+   There's not much time now - it's already Christmas, but you're nowhere near the North Pole, much too far to deliver
+   these stars to the sleigh in time.
+
+   However, maybe the huge antenna up here can offer a solution. After all, the sleigh doesn't need the stars, exactly; it
+   needs the timing data they provide, and you happen to have a massive signal generator right here.
+
+   You connect the stars you have to your prototype computer, connect that to the antenna, and begin the transmission.
+
+   Nothing happens.
+
+   You call the service number printed on the side of the antenna and quickly explain the situation. "I'm not sure what
+   kind of equipment you have connected over there," he says, "but you need a clock signal." You try to explain that this
+   is a signal for a clock.
+
+   "No, no, a clock signal - timing information so the antenna computer knows how to read the data you're sending it. An
+   endless, alternating pattern of 0, 1, 0, 1, 0, 1, 0, 1, 0, 1...." He trails off.
+
+   You ask if the antenna can handle a clock signal at the frequency you would need to use for the data from the stars.
+   "There's no way it can! The only antenna we've installed capable of that is on top of a top-secret Easter Bunny
+   installation, and you're definitely not-" You hang up the phone.
+
+   You've extracted the antenna's clock signal generation assembunny code (your puzzle input); it looks mostly compatible
+   with code you worked on just recently.
+
+   This antenna code, being a signal generator, uses one extra instruction:
+
+     • out x transmits x (either an integer or the value of a register) as the next value for the clock signal.
+
+   The code takes a value (via register a) that describes the signal to generate, but you're not sure how it's used. You'll
+   have to find the input to produce the right signal through experimentation.
+
+   What is the lowest positive integer that can be used to initialize register a and cause the code to output a clock
+   signal of 0, 1, 0, 1... repeating forever?
+
+   Your puzzle answer was ____.
+
+--- Part Two ---
+
+   The antenna is ready. Now, all you need is the fifty stars required to generate the signal for the sleigh, but you don't
+   have enough.
+
+   You look toward the sky in desperation... suddenly noticing that a lone star has been installed at the top of the
+   antenna! Only 49 more to go.
+
+   If you like, you can [ [Retransmit the Signal] ] .
+
+   Both parts of this puzzle are complete! They provide two gold stars: **
+
+References
+
+   Visible links
+   . http://adventofcode.com/
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+   . https://en.wikipedia.org/wiki/Clock_signal
+   . http://adventofcode.com/2016/day/12
+   . http://adventofcode.com/2016/day/23
+   . http://adventofcode.com/2016
+   . http://adventofcode.com/2016/day/25/input