HDU 3861 The King’s Problem (强连通分量缩点+二分图匹配最小路径覆盖)
ProblemDescriptionIntheKingdomofSilence,thekinghasanewproblem.ThereareNcitiesinthekingdomandthereareMdirectionalroadsbetweenthecities.Thatmeansthatifthereisaroadfromutov,youcanonlygofromcityutocityv,b