n, c, v = 3.times.map { gets.to_i } s, t, y, m = 4.times.map { gets.chomp.split.map(&:to_i) } from_to = v.times.map {|i| { s: s[i], t: t[i], y: y[i], m: m[i] } }.group_by {|v| v[:s] } q = [{pos: 1, y: 0, m: 0}] g = nil until q.empty? q.sort! { |a, b| a[:m] <=> b[:m] } current = q.shift pos = current[:pos] if pos == n g ||= current g = current if g[:m] > current[:m] end if from_to[pos] from_to[pos].each do |to| cost = current[:y] + to[:y] minute = current[:m] + to[:m] if cost <= c && (g.nil? || minute < g[:m]) q.push({ pos: to[:t], y: cost, m: minute} ) end end end end if g.nil? puts -1 else puts g[:m] end