add day 9

add day 8

add day 7

add day 6

day 5: fix output

day 5: fix formatting

add day 5

day 4: use range for number checking

use assert_eq for comparisons

day 4: remove redundant pattern matching

add day 4

common: add block input reading

day 2: use Self construcor

add day 3

day 2: fix formatting and linitng

add day 2

day 1: change output

fix email

initial commit