# Enter your code here. Read input from STDIN. Print output to STDOUT
a = map(int,raw_input().split())
b = map(int,raw_input().split())
c = map(int,raw_input().split())
s = [a,b,c]
n = 3

#Construct Magic Sqares
s1 = [[8, 1, 6], [3, 5, 7], [4, 9, 2]]
s2 = [[row[i] for row in s1] for i in range(n)]
s3 = zip(*s1[::-1])
s4 = [[row[i] for row in s3] for i in range(n)]
s5 = zip(*s3[::-1])
s6 = [[row[i] for row in s5] for i in range(n)]
s7 = zip(*s5[::-1])
s8 = [[row[i] for row in s7] for i in range(n)]

x1 = map(lambda i: map(lambda x, y: abs(x - y), s[i], s1[i]), xrange(n))
x2 = map(lambda i: map(lambda x, y: abs(x - y), s[i], s2[i]), xrange(n))
x3 = map(lambda i: map(lambda x, y: abs(x - y), s[i], s3[i]), xrange(n))
x4 = map(lambda i: map(lambda x, y: abs(x - y), s[i], s4[i]), xrange(n))
x5 = map(lambda i: map(lambda x, y: abs(x - y), s[i], s5[i]), xrange(n))
x6 = map(lambda i: map(lambda x, y: abs(x - y), s[i], s6[i]), xrange(n))
x7 = map(lambda i: map(lambda x, y: abs(x - y), s[i], s7[i]), xrange(n))
x8 = map(lambda i: map(lambda x, y: abs(x - y), s[i], s8[i]), xrange(n))

z1 = reduce(lambda x, y: x + sum(y), x1, 0)
z2 = reduce(lambda x, y: x + sum(y), x2, 0)
z3 = reduce(lambda x, y: x + sum(y), x3, 0)
z4 = reduce(lambda x, y: x + sum(y), x4, 0)
z5 = reduce(lambda x, y: x + sum(y), x5, 0)
z6 = reduce(lambda x, y: x + sum(y), x6, 0)
z7 = reduce(lambda x, y: x + sum(y), x7, 0)
z8 = reduce(lambda x, y: x + sum(y), x8, 0)

cost = min(z1, z2, z3, z4, z5, z6, z7, z8)
print cost