poj 2777 Count Color 线段树
摘要:Count ColorTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 27842Accepted: 8337DescriptionChosen Problem Solving and Program design as an optional course, you are required to solve all kinds of problems. Here, we get a new problem. There is a very long board with length L centimeter, L is a
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poj 1129 Channel Allocation 四色定理
摘要:Channel AllocationTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 9896Accepted: 5057DescriptionWhen a radio station is broadcasting over a very large area, repeaters are used to retransmit the signal so that every receiver has a strong signal. However, the channels used by each repeater mus
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