T1 = 3
T2 = 150

def solution(S):
	lines = S.split('\n')
	bill = {}
	max_cost = 0
	phone_with_max_cost = ''
	for line in lines:
		info = line.split(',')
		time = info[0]
		time_as_arr = time.split(':')
		hours = int(time_as_arr[0])
		minutes = int(time_as_arr[1])
		seconds = int(time_as_arr[2])
		if hours == 0 and minutes < 5:
		    cost = (minutes*60+seconds)*T1
		else:
			minutes += hours*60
			cost = minutes*T2+int(seconds>0)*T2
		phone = info[1]
		if phone not in bill:
			bill[phone] = cost
		else:
			bill[phone] += cost
		if bill[phone] > max_cost:
			max_cost = bill[phone]
			phone_with_max_cost = phone
	bill[phone_with_max_cost] = 0
	total = 0
	for item in bill:
		total += bill[item]
	return total