#Ez pass question (Oct 4 q.5) for any number of people that crossing the bridge
#on specific day

#input: n - number of people, for each person user enters car type: 1 or 2 and Ez 
#Pass indicator: 0 - no Ez pass, 1 - Ez pass

n = int(input("enter number of people who crossed the bridge "))
i = 0
cost = 0
while(i < n):
	print("processing person", i+1)
	car = int(input("enter car type "))
	ez_pass=int(input("enter ez pass indicator "))

	if(ez_pass==1):
		cost=cost+4.5
	elif(car==1):
		cost=cost+5
	else:
		cost=cost+6
	
	i=i+1
print("total cost per day for all people",cost*2)