\--- 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 `45972`. \--- 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? Your puzzle answer was `326`. Both parts of this puzzle are complete! They provide two gold stars: \*\* At this point, all that is left is for you to [admire your Advent calendar](/2017). If you still want to see it, you can [get your puzzle input](2/input).