rail, 247 bytes

Result

WA

Code [DL]

$ 'j'
 \             /-(!c!)(n)1s{j}(c)#
  \-(!n!)(n)0q<
               \-1a#

$ 'k'
 \             /-(n)1s{k}0#
  \-(!n!)(n)0q<
               \-#

$ 'main'   /-{j}i-\
 \         |      |
  \        \   /--/
   \-25m{k}--e<
               \--ooo#

stdin

1611954165976459522725693689034942786650718332618893668102285155194760428464683708920790922840341574

stdout

81011

stderr

strace