package main

import (
	"fmt"
	"github.com/spaolacci/murmur3"
	"math/bits"
)

type Cell struct {
	head, tail interface{}
	mug        uint64
}

func byteLength(i uint64) int {
	lyn := bits.Len64(i)
	byt := lyn >> 3
	if lyn&7 != 0 {
		return byt + 1
	}
	return byt
}

func intbytes(i uint64) []byte {
	return []byte{byte(i), byte(i >> 8), byte(i >> 16), byte(i >> 24), byte(i >> 32), byte(i >> 40), byte(i >> 48), byte(i >> 56)}
}

func mum(syd, fal, key uint64) uint64 {
	k := intbytes(key)
	for s := syd; s < syd+8; s++ {
		haz := murmur3.Sum32WithSeed(k, uint32(s))
		ham := (uint64(haz) >> 31) ^ (uint64(haz) & 0x7fffffff)
		if ham != 0 {
			return ham
		}
	}
	return fal
}

func mugBoth(one, two uint64) uint64 {
	return mum(0xdeadbeef, 0xfffe, (two<<32)|one)
}

func (c *Cell) hash() uint64 {
	if c.mug == 0 {
		c.mug = mugBoth(mug(c.head), mug(c.tail))
	}
	return c.mug
}

func (c *Cell) equals(other *Cell) bool {
	// Implement equality logic as per your requirements
	return false
}

func deep(n interface{}) bool {
	_, ok := n.(*Cell)
	return ok
}

func mug(n interface{}) uint64 {
	if deep(n) {
		return n.(*Cell).hash()
	}
	return mum(0xcafebabe, 0x7fff, n.(uint64))
}

// Implement other functions as needed

func main() {
	// Test code or main logic
}