# ZJ作業 ### 7/31 1. https://zerojudge.tw/ShowProblem?problemid=b970 2. https://zerojudge.tw/ShowProblem?problemid=b877 3. https://zerojudge.tw/ShowProblem?problemid=f345 4. https://zerojudge.tw/ShowProblem?problemid=c364 第四題滿有趣的有職業工程師去做,做完的心得: 
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