L = int(input())
M = int(input())
N = int(input())

money_total = (L * 100) + (M * 25) + N

coins_money = money_total % 1000

L_coins = coins_money // 100
coins_money -= (L_coins * 100)

M_coins = coins_money // 25
coins_money -= (M_coins * 25)

N_coins = coins_money

print(L_coins + M_coins + N_coins)