L = gets.to_i
M = gets.to_i
N = gets.to_i

sum_money = L * 100 + M * 25 + N * 1

sum_money %= 1000

sum = 0
[100, 25].each do |i|
	num, sum_money = sum_money.divmod(i)
	sum += num
end

puts sum + sum_money