2017 Multi-University Training Contest - Team 9 1005&&HDU 6165 FFF at Valentine【強聯通縮點+拓撲排序】...

FFF at Valentine Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 1060    Accepted Submission(s): 506 Problem Description At Valentine's eve, Sh

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