# Read the number of quarters, dimes, nickels, and pennies

quarters = int(input())
dimes = int(input())
nickels = int(input())
pennies = int(input())

# Calculate total amount in cents

total_cents = (quarters * 25) + (dimes * 10) + (nickels * 5) + pennies

# Convert to dollars (as a float)
dollars = total_cents / 100.0

# Output the amount formatted to two decimal places

print(f'Amount: ${dollars:.2f}')