H, M = gets.split.map(&:to_i)

time = 60 * H + M + 0.5
start_at = 60 * 7 + 0.5
end_at = 60 * 8 + 30

if time <= start_at
  puts 'Yes'
elsif start_at <= time && time <= end_at
  raise
else
  raise
end