l = int(input())
m = int(input())
n = int(input())
sum_of_cash = n + 25*m + 100*l
total_coin = 0
sum_of_cash -= (sum_of_cash//1000)*1000
total_coin += sum_of_cash//100
sum_of_cash -= (sum_of_cash//100)*100
total_coin += sum_of_cash//25
sum_of_cash -= (sum_of_cash//25)*25
total_coin += sum_of_cash
print(total_coin)