Here's a fair competition.
Comment an integral between 1 to 100 (inclusive) below. If the number is same as that in my mind I'll give to him or her my membership as a Christmas gift. 🎁 (around 140 days left)
If more than one person get the correct answer, I'll give to one who comment the earliest.
The answer will be released around 12 Beijing/Hong Kong time. I hope I won't fall a deep sleep at that time. Lmao. If I fall a deep sleep, I'll release it tomorrow morning.
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