Something went wrong. Try again.
Code for the Advent of Code event
aoc advent-of-code
Something went wrong. Try again.
178 B · 7 lines
Ruby
at rust
12345678#!/usr/bin/env ruby# frozen_string_literal: true
DIV, v = 20_201_227, 1CARD, DOOR = ARGF.readlines.map(&:to_i)
puts DOOR.pow((1..).find { (v = (v * 7) % DIV) == CARD }, DIV)