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

sum = L * 100 + M * 25 + N * 1
a = int(sum / 1000)
b = int((sum - a * 1000) / 100)
c = int((sum - a * 1000 - b * 100) / 25)
d = int(sum - a * 1000 - b * 100 - c * 25)

print(b + c + d)