coin_list = [0, 0, 0]
for i in range(3):
    coin_list[i] = int(input())
coin_list[1] += coin_list[2] // 25
coin_list[2] = coin_list[2] % 25

coin_list[0] += coin_list[1] // 4
coin_list[1] = coin_list[1] % 4

coin_list[0] = coin_list[0] % 10

print(sum(coin_list))