n, h, m, t = gets.chomp.split.map &:to_i

minute_alert = h * 60 + m                                              
minute_additional_sleep = n * t
minute_wake_up = minute_alert + minute_additional_sleep
minute_wake_up = minute_wake_up % (24 * 60)

p minute_wake_up / 60
p minute_wake_up % 60 - t