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

s = L*100+M*25+N

q_1000, mod_1000 = divmod(s, 1000)
q_100, mod_100 = divmod(mod_1000, 100)
q_25, mod_25 = divmod(mod_100, 25)
q_1 = mod_25

print(sum([q_100, q_25, q_1]))