a = int(input())
b = int(input())
c = int(input())
if (c / 25) > 0.0:
    b += int(c/25)
    c -= 25 * int(c/25)
if (b / 4) > 0.0:
    a += int(b/4)
    b -= 4 * int(b/4)
if (a / 10) > 0.0:
    a -= 10 * int(a/10)
print(a+b+c)