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Calling CirclesTime Limit: 3000MS Memory Limit: Unknown 64bit IO Format: %lld & %lluSubmitStatusDescriptionIf you've seen television commercials for long-dist

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Problem: ACMER的出行计划Problem Description众所周知，ACMER经常要到全国各地去参加各种比赛。每当要出去比赛的时候，我们先要制定一个出行计划，比如说我们是坐飞机还是坐火车，从哪里坐到哪里等等。现在给你一副路线图，请你制定一个合理的出行计划，由于经费有限，规定最多只能坐k次飞机。Input第一行给出一个T，