# Arup Guha
# 1/5/2013
# Solution to Programming Knights Practice Program Chapter 1 Problem 7
# Football Tickets

UPPERBOWL_COST  = 25
LOWERBOWL_COST  = 50

def main():

    # Get the user input.
    upperTix = int(input("How many upper bowl season tickets do you want?\n"))
    lowerTix = int(input("How many lower bowl season tickets do you want?\n"))
    numGames = int(input("How many home games are in a season?\n"))
    salesTax = int(input("What is the local sales tax percentage?\n"))

    # Calculate the cost for one game, then the season.
    costPerGame = upperTix*UPPERBOWL_COST + lowerTix*LOWERBOWL_COST;
    totalCost = costPerGame*numGames*(1 + salesTax/100);

    # Print out the result.
    print("Your total cost is $",totalCost,".", sep="")

    
main()