Advent of Code

--- Day 2: Corruption Checksum ---

   As you walk through the door, a glowing humanoid shape yells in your
   direction. "You there! Your state appears to be idle. Come help us repair the
   corruption in this spreadsheet - if we take another millisecond, we'll have
   to display an hourglass cursor!"

   The spreadsheet consists of rows of apparently-random numbers. To make sure
   the recovery process is on the right track, they need you to calculate the
   spreadsheet's checksum. For each row, determine the difference between the
   largest value and the smallest value; the checksum is the sum of all of these
   differences.

   For example, given the following spreadsheet:

 5 1 9 5
 7 5 3
 2 4 6 8

     * The first row's largest and smallest values are 9 and 1, and their
       difference is 8.
     * The second row's largest and smallest values are 7 and 3, and their
       difference is 4.
     * The third row's difference is 6.

   In this example, the spreadsheet's checksum would be 8 + 4 + 6 = 18.

   What is the checksum for the spreadsheet in your puzzle input?

   Your puzzle answer was 46402.

   The first half of this puzzle is complete! It provides one gold star: *

--- Part Two ---

   "Great work; looks like we're on the right track after all. Here's a star for
   your effort." However, the program seems a little worried. Can programs be
   worried?

   "Based on what we're seeing, it looks like all the User wanted is some
   information about the evenly divisible values in the spreadsheet.
   Unfortunately, none of us are equipped for that kind of calculation - most of
   us specialize in bitwise operations."

   It sounds like the goal is to find the only two numbers in each row where one
   evenly divides the other - that is, where the result of the division
   operation is a whole number. They would like you to find those numbers on
   each line, divide them, and add up each line's result.

   For example, given the following spreadsheet:

 5 9 2 8
 9 4 7 3
 3 8 6 5

     * In the first row, the only two numbers that evenly divide are 8 and 2;
       the result of this division is 4.
     * In the second row, the two numbers are 9 and 3; the result is 3.
     * In the third row, the result is 2.

   In this example, the sum of the results would be 4 + 3 + 2 = 9.

   What is the sum of each row's result in your puzzle input?

   Although it hasn't changed, you can still get your puzzle input.

   Answer: 265

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