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PKU v. THU (Preliminary Round 2)
Total points: 100
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# 8735. 道路监控
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The problem was used in the following contest:
IOI 2011 中国国家队选拔赛暨精英赛 (CTSC 2011) Day 1
Upload a .zip file containing road1.out, road2.out, road3.out, road4.out, road5.out, road6.out, road7.out, road8.out, road9.out, road10.out:
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