citizen428

### Keybase proof

I hereby claim:

  * I am citizen428 on github.
  * I am citizen428 (https://keybase.io/citizen428) on keybase.
  * I have a public key whose fingerprint is E183 E826 AAA2 71D9 A25E  B8E9 EF16 E5E6 87B2 A218

To claim this, I am signing this object:

citizen428

my @l = 'aoc-expenses.txt'.IO.lines;

# part 1
say [*] @l.combinations(2).first: *.sum == 2020;

# part 2
say [*] @l.combinations(3).first: *.sum == 2020;