def mergesort(nums,le,ri): if le>ri-2: return 0 mi=le+(ri-le)//2 a=mergesort(nums,le,mi) b=mergesort(nums,mi,ri) c=merge(nums,le,mi,ri) return a+b+c def merge(nums,le,mi,ri): i,j=le,mi data=[] count=0 while i<mi and j<ri: if nums[i]<nums[j]: d
Description In this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swapping two adjacent sequence elements until the sequence is sorted in ascending order. For the input seque
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 25905 Accepted Submission(s): 15250 Problem Description The inversion number of a given number sequence a1, a2, ..., a
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 16686 Accepted Submission(s): 10145 Problem Description The inversion number of a given number sequence a1, a2, ..., a
Brainman Time Limit: 1000 MS Memory Limit: 30000 KB 64-bit integer IO format: %I64d , %I64u Java class name: Main [Submit] [Status] [Discuss] Description Background Raymond Babbitt drives his brother Charlie mad. Recently Raymond counted 246 toothp
一.题目描述 There is a permutation P with n integers from 1 to n. You have to calculate its inversion number, which is the number of pairs of Pi and Pj satisfying the following conditions: iPj. 二.输入 The input may contain several test cases. In each test c
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 10326 Accepted Submission(s): 6359 Problem Description The inversion number of a given number sequence a1, a2, ..., an is t
Description The inversion number of a given number sequence a1, a2, ..., an is the number of pairs (ai, aj) that satisfy i < j and ai > aj. For a given sequence of numbers a1, a2, ..., an, if we move the first m >= 0 numbers to the end of the seq
Swaps and Inversions Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2787 Accepted Submission(s): 1071 Problem Description Long long ago, there was an integer sequence a.Tonyfang think this s