#exam 4 prep problem 1

def money(deposit):
	if(deposit>=250 and deposit<=9999.99):
		interest=1
	elif(deposit>=10000 and deposit<=49999.99):
		interest=1.1
	elif(deposit>=50000 and deposit<=99999.99):
		interest=1.15
	else:
		interest=1.35

	return deposit+deposit*interest/100
def total(num_customers):
	sum=0
	for i in range(num_customers):
		deposit=float(input("enter deposit "))
		if(deposit<250):
			print("not eligible to open account")
		else:
			result=money(deposit)
			print("after 1 year balance is", format(result,".2f"))
			sum+=result
	return sum
def main():
	num_customers=int(input("enter number of customers "))
	print(format(total(num_customers),".2f"))
main()