HDU 6318 2018多校第二场1010 Swaps and InversionsSwaps and Inversions
Swaps and InversionsTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 0 Accepted Submission(s): 0Problem DescriptionLong long ago, there ...