# l: 100 m: 25 n: 1
a = [input() for i in range(3)]
l = a[0]
m = a[1]
n = a[2]

exchangeToM = int(n / 25)
n = int(n % 25)

m = exchangeToM + m
exchangeToL = int(m / 4)
m = int(m % 4)

l = exchangeToL + l
exchangeToK = int(l / 10)
l = int(l % 10)

print n + m + l