fishnumv1.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# fishnumv1.py
# 2016/10/11(火)
# walkingmask
# http://b.hatena.ne.jp/entry/www.slideshare.net/DoomKobayashi/ver1-png

def machineA(x):
  return x+1

def machineB(x,y):
  if x == 0:
    return machineA(y)
  elif y == 0:
    return machineB(x-1,y+1)
  else:
    return machineB(x-1,machineB(x,y-1))

def machineC(x,y):
  if x == 0:
    return machineB(y,y)
  elif y == 0:
    return machineC(x-1,y+1)
  else:
    return machineC(x-1,machineC(x,y-1))

#print(machineC(3,3))
print(machineC(1,1))

machineC(3,3)は再帰深さ制限に引っかかって実行できず．さすが巨大数...