BackgroundMcCarthy is a famous theorician of computer science. In his work, he defined a recursive function, called f91, that takes as input a positive integer N and returns a positive integer defined as follows:If N ≤ 100, then f91(N) = f91(f91(N+11
要從windows共用檔案到Mininet中,由於winscp只能將虛擬機器中的東西拷貝出來。我就在網上翻啊翻,找到的方法都說要什麼光碟片掛載blabla的,但是由於我沒有圖形介面,糾結了半天,最後將各種方法、命令雜糅在一起。總結出了個方法,部分命令我也不是很明白,但我感覺是通用的。我先說明下環境:win7+VirtualBox 登陸成功後,首先在開啟的虛擬機器的菜單(最上方)裡選擇"裝置-> "安裝增強功能包"。然後鍵入命令:sudo mount /dev/cdrom2
Queue-jumpersTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1663 Accepted Submission(s): 393Problem DescriptionPonyo and Garfield are waiting outside the box-office for their favorite movie.
3345. Chinese ChessTime Limit: 20.0 Seconds Memory Limit: 65536KTotal Runs: 426 Accepted Runs: 47Winnie is very interested in chinese chess. Now, let's consider a game which is similar to it. There is a N * M chess board, we hope we can put
3294. Building BlockTime Limit: 1.0 Seconds Memory Limit: 65536KTotal Runs: 840 Accepted Runs:235John are playing with blocks. There are N blocks (1 ≤ N ≤ 30000) numbered 0..N-1. Initially, there are N piles, and each pile contains one block.