import math

L = int(input())
M = int(input())
N = int(input())
amount = L * 100 + M * 25 + N * 1
# print(amount)

sen = math.floor(amount / 1000)
amount = amount % 1000
hyaku = math.floor(amount / 100)
amount = amount % 100
nigo = math.floor(amount / 25)
amount = amount % 25
ichi = math.floor(amount / 1)

# print("sen:" + str(sen))
# print("hyaku:" + str(hyaku))
# print("nigo:" + str(nigo))
# print("ichi:" + str(ichi))
maisu = sen + hyaku + nigo + ichi
print(maisu)