Codeforces-540E.Infinite Inversions区间化点求交换逆序对(离散化+树状数组)
E.InfiniteInversionstimelimitpertestmemorylimitpertest2seconds256megabytesThereisaninfinitesequenceconsistingofallpositiveintegersintheincreasingorder:p = {1, 2, 3, ...}.Weperformednswapoperationswith