#!/usr/bin/ruby

#
# See https://theweeklychallenge.org/blog/perl-weekly-challenge-149
#
 
#
# Run as: ruby ch-2.rb < input-file
#

A287298 = []

A287298[ 2] =                         "1"
A287298[ 3] =                         "1"
A287298[ 4] =                      "3201"
A287298[ 5] =                      "4301"
A287298[ 6] =                    "452013"
A287298[ 7] =                   "6250341"
A287298[ 8] =                  "47302651"
A287298[ 9] =                 "823146570"
A287298[10] =                "9814072356"
A287298[11] =               "A8701245369"
A287298[12] =              "B8750A649321"
A287298[13] =              "CBA504216873"
A287298[14] =            "DC71B30685A924"
A287298[15] =           "EDAC93B24658701"
A287298[16] =          "FED5B39A42706C81"
A287298[17] =          "GFED5A31C6B79802"
A287298[18] =        "HGF80ADC53712EB649"
A287298[19] =       "IHGFD3408C6E715A2B9"
A287298[20] =      "JIHG03DAC457BFE96281"
A287298[22] =    "LKJIG5D14B9032FHAC867E"
A287298[23] =   "MLKJEFG5IC1D9H8042AB376"
A287298[24] =  "NMLKJ2BD0639GFE7C8IH5A41"
A287298[25] = "ONMLKD8CJE2H47F6395I0B1AG"

ARGF . each_line do |n|
    puts (A287298[n . to_i] || "Too hard to calculate")
end