Added 2017

2017/02/2.md

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+## \-\-- 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 `34925`.
+
+The first half of this puzzle is complete! It provides one gold star: \*
+
+## \-\-- Part Two \-\-- {#part2}
+
+\"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]{title="Bonus points if you solve this part using only 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?
+
+Answer:
+
+Although it hasn\'t changed, you can still [get your puzzle
+input](2/input).

2017/02/solution.py

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+#!/bin/python3
+import sys
+from pprint import pprint
+
+input_f = "input" #sys.argv[1]
+sum = 0
+with open(input_f) as file:
+    for line in file:
+        line = list(map(int,line.rstrip('\n').split()))
+#########################################
+#                                       #
+#              Part 1                   #
+#                                       #
+#########################################
+
+        sum+=(max(line)-min(line))
+
+print(sum)
+        
+
+#########################################
+#                                       #
+#              Part 2                   #
+#                                       #
+#########################################
+
+
+