经典的题目,主要还是考思维,之前在想的时候只想到了在一个循环中,每次都用最小的来交换,结果忽略了一种情况,还可以选所有数中最小的来交换一个循环. Cow Sorting Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 6511 Accepted: 2532 Description Farmer John's N (1 ≤ N ≤ 10,000) cows are lined up to be milked in the…
我看大多数人的博客只说了一句:找规律得答案为(n + m) / gcd(n, m) 不过神题的题解还须神人写.. We can associate at each cell a base 3-number, the log3(R) most significant digits is the index of the row of the cell and the log3(C) least significant digits is the index of his column. What…
Sorting is one of the most usedoperations in real life, where Computer Science comes into act. It iswell-known that the lower bound of swap based sorting is nlog(n).It means that the best possible sorting algorithm will take at least W(nlog(n))swaps…