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RE: [Answer and winners] Mathematics × Programming Competition #2 [公佈得獎名單] 數學 × 程式編寫比賽 (第二回)
OK, this is a good one. I couldn't systemmatically list out my proof but at least I thought that it should be -1. Next time I will put in my answer anyway. Thank you for setting this contest up. A really good one! Enjoy it very much!
Sure, thanks for your support bro!