摘要：
Problem FFunny Car RacingThere is a funny car racing in a city with n junctions and m directed roads.The funny part is: each road is open and closed periodically. Each road is associate with two integers (a, b), that means the road will be open for a seconds, then closed for b seconds, then open for 阅读全文
posted @ 2013-10-16 13:48
流水依依
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