# Enter your code here. Read input from STDIN. Print output to STDOUT
L = [[8,1,6],[3,5,7],[4,9,2]]
def distance(L1,L2):
    s = 0
    for i in range(3):
        for j in range(3):
            s += abs(L1[i][j]-L2[i][j])
    return s
def rotation(L):
    temp = L[:]
    temp[0][1],temp[1][0] = temp[1][0],temp[0][1]
    temp[0][2],temp[2][0] = temp[2][0],temp[0][2]
    temp[1][2],temp[2][1] = temp[2][1],temp[1][2]
    
    return reflectionx(temp)        
def reflectionx(L):
    temp = L[:]
    for i in range(3):
        temp[i][0],temp[i][2] = temp[i][2],temp[i][0]
    return temp    
        
def threeRotation(L):
    temp = L[:]
    import copy

    BigL = []
    BigL.append(temp)
    for _ in range(3):
        temp = rotation(temp)
        BigL.append(copy.deepcopy(temp))
    return BigL

def reflectiony(L):
    temp = L[:]
    temp[0],temp[2] = temp[2],temp[0]
    return temp
LL = []
#print threeRotation(L)
LL += threeRotation(L)

LL += threeRotation(reflectionx(L))
LL += threeRotation(reflectiony(L)) 
LL += threeRotation(reflectionx(reflectiony(L)))
LL += threeRotation(reflectiony(reflectionx(L)))

m =1000
tar = []
for i in range(3):
    temp = raw_input().split()
    temp =map(int,temp)
    tar.append(temp)
#print LL
for l in LL:
    m = min(m,distance(l,tar))
print m