import math

hyaku_num = int(input())
nizyugo_num = int(input())
ichi_num = int(input())
sen = 0

if ichi_num >= 25:
    nizyugo = math.floor(ichi_num / 25)
    nizyugo_num += nizyugo
    ichi_num = ichi_num - (nizyugo * 25)
if nizyugo_num >= 4:
    hyaku = math.floor(nizyugo_num / 4)
    hyaku_num += hyaku
    nizyugo_num = nizyugo_num - (hyaku * 4)
if hyaku_num >= 10:
    sen = math.floor(hyaku_num / 10)
    hyaku_num = hyaku_num - (sen * 10)

print(math.floor(ichi_num + nizyugo_num + hyaku_num))