(Continuation from yesterday)

Finally, I gave up solving this problem and find the solution in the Internet.

But I could not find the Japanese materials, and, I had to begin to translated English papers into Japanese.

I thought that I could understand the answer of the first half of this problem, but I don't make the meaning of the last half clear.

I explained to my daughter that "this answer is that the Alice decides her rule as she likes"

But she didn't look like accepting my answer.

Her face said that "it should be a general answer, not on Alice's original rules".

I thought that I had no choice, and I took her to my room, turned the PC on, and started MS-Excel. We started finding the general solution with trying each pattern of calculations.

(To be continued)