coco430的专栏

180. Inversions time limit per test: 0.25 sec. memory limit per test: 4096 KB input: standard output: standard There are N integers (1A[j]. Input The first line of the input

271. Book Pile time limit per test: 0.25 sec. memory limit per test: 65536 KB input: standard output: standard There is a pile of N books on the table. Two types of operations are perfo