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IDProblem Interactive Output Only CommunicationRating
#4532园子里清华集训 2015 Day 3CTT 2015 Day 3
[0]
#4533灯泡测试清华集训 2015 Day 3CTT 2015 Day 3
[+3]
#4534新式计算机清华集训 2015 Day 3CTT 2015 Day 3Output Only
[0]
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