l = int(input())
m = int(input())
n = int(input())

while l >= 10 or m >= 4 or n >= 25:

    if n >= 25 :
        n -= 25
        m += 1
    elif m >= 4 : 
        m -= 4
        l += 1
    elif l >= 10:
        l -= 10

print (n + m + l)