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

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

print(b + c + d)