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

def dp(l, m, n):

    if n >= 25:
        return dp(l, m+1, n-25)
    elif m >= 4:
        return dp(l+1, m-4, n)
    elif l >= 10:
        return dp(l-10, m, n)
    else:
        return l, m, n

print(sum(dp(l, m, n)))