剑不飞

摘要： Magic TreeTime Limit 1000msMemory Limit 65536Kdescription Every acmer dream for gold medal. Fotunately,there are two magic trees (which are conveniently numbered 1 and 2) in our campus, each full of gold medal. The trees are very high, so we can not touch the gold medal when they are in the tree bu. 阅读全文

摘要： GridsTime Limit 1000msMemory Limit 65536KdescriptionOn an 1 × 1 grid,partition the length and width into 50 parts,forming 2500 unit grids with the same size.Now,given n circles with equal radius R on the grid.Find the total number of unit grids which are not covered by any of a circle. A unit g 阅读全文

摘要： 启动 Debug，它是可用于测试和调试 MS-DOS 可执行文件的程序。 Debug [[drive:][path] filename [parameters]] 参数 [drive:][path] filename 指定要测试的可执行文件的位置和名称。 parameters 指定要测试的可执行文件所需要的任何命令行信息。 ++ 说明 使用 Debug 命令但不指定要测试的文件 如果使用没有位置和文件名的 Debug 命令，然后键入所有的 Debug 命令以响应 Debug 提示符，连字符 (-)。 Debug 命令 以下是 Debug 命令列表： ? 显示 Debug 命令列表。 a 汇编 阅读全文

摘要： 1 数据传送 MOVMOV dest,src（1）两个操作数类型（长度）相同（2）不能同为存储操作数（3）立即数不能作为目的操作数（4）CS不能作为目的操作数，CS存的是段基址（5）两个操作数不能同为段寄存器2寻址方式（1）直接寻址data segmentx db 2,3y dw 100,50data ends设x的偏移地址为0000H那x的第一个数据为2，第二个数据为32 0000H3 0001H100 0002H50 0004HMOV AL,X 等价于 MOV AL，[0000H]其中基址又DS提供MOV AX,x 错误指令 AX两个字节，而x为一个字节，类型不符合MOV AX,WORD 阅读全文

摘要： D -Optical ExperimentTime Limit:5000MSMemory Limit:262144KB64bit IO Format:%I64d & %I64uSubmitStatusPracticeCodeForces 67DDescriptionProfessor Phunsuk Wangdu has performed some experiments on rays. The setup fornrays is as follows.There is a rectangular box having exactlynholes on the opposite f 阅读全文

摘要： C -Sequence of BallsTime Limit:1000MSMemory Limit:262144KB64bit IO Format:%I64d & %I64uSubmitStatusPracticeCodeForces 67CDescriptionYou are given a sequence of ballsAby your teacher, each labeled with a lowercase Latin letter 'a'-'z'. You don't like the given sequence. You wa 阅读全文

摘要： 输出1,2,3,4;输出1 2 3 4 data segment; x db 1 data ends code segment assume ds:data,cs:code start: mov ax,data; mov ds,ax; add x,'0'; mov cx,4; print: mov dl,x; mov ah,02h; int 21h; add x,1; loop print; mov ax,4c00h; int 21h;返回 code ends; end start输入HE... 阅读全文

摘要： C. Petya and File Systemtime limit per test3 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputRecently, on a programming lesson little Petya showed how quickly he can create files and folders on the computer. But he got soon fed up with this activity, and he decided t 阅读全文

摘要： E -Petya and PostTime Limit:2000MSMemory Limit:262144KB64bit IO Format:%I64d & %I64uSubmitStatusPracticeCodeForces 66EDescriptionLittle Vasya's uncle is a postman. The post offices are located on one circular road. Besides, each post office has its own gas station located next to it. Petya&# 阅读全文

摘要： Fence RailsBurch, Kolstad, and SchrijversFarmer John is trying to erect a fence around part of his field. He has decided on the shape of the fence and has even already installed the posts, but he's having a problem with the rails. The local lumber store has dropped off boards of varying lengths; 阅读全文