[數撚圍爐區] 一唔開post就成班白咭衝哂出去派膠 (82)
膠智的kai龍
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B加埋除2咪得 搞咁多野做咩
當手巴冇講過
手巴玩手指
冇酒冇尊嚴
諗到個簡單d ge
Choose n such that 1/2^n < b - a, then argue there is p such that a < p/2^n < b.
Choose n such that 1/2^n < b - a, then argue there is p such that a < p/2^n < b.
係 頭先係地鐵發現自己on9個下都諗返呢個approach
因為第一眼諗左metric space個definition去做
