import numpy as np

in_1 = "73167176531330624919225119674426574742355349194934"
in_2 = "96983520312774506326239578318016984801869478851843"
in_3 = "85861560789112949495459501737958331952853208805511"
in_4 = "12540698747158523863050715693290963295227443043557"
in_5 = "66896648950445244523161731856403098711121722383113"
in_6 = "62229893423380308135336276614282806444486645238749"
in_7 = "30358907296290491560440772390713810515859307960866"
in_8 = "70172427121883998797908792274921901699720888093776"
in_9 = "65727333001053367881220235421809751254540594752243"
in_10 = "52584907711670556013604839586446706324415722155397"
in_11 = "53697817977846174064955149290862569321978468622482"
in_12 = "83972241375657056057490261407972968652414535100474"
in_13 = "82166370484403199890008895243450658541227588666881"
in_14 = "16427171479924442928230863465674813919123162824586"
in_15 = "17866458359124566529476545682848912883142607690042"
in_16 = "24219022671055626321111109370544217506941658960408"
in_17 = "07198403850962455444362981230987879927244284909188"
in_18 = "84580156166097919133875499200524063689912560717606"
in_19 = "05886116467109405077541002256983155200055935729725"
in_20 = "71636269561882670428252483600823257530420752963450"

in_number = in_1 + in_2 + in_3 + in_4 + in_5 + in_6 + in_7 + in_8 + in_9 + in_10 + in_11 + in_12 + in_13 + in_14 + in_15 + in_16 + in_17 + in_18 + in_19 + in_20

max_index = 20
max_prod = 0

i = 0
j = 0
print(int(in_number[0]))
for i in range(0, 986):
    prod = 1
    for j in range(i, i + 13):
        prod = prod * int(in_number[j])
    if(prod > max_prod):
        max_prod = prod

print(max_prod)