UVA-101 The Blocks Problem 栈
2016-03-12 11:40
429 查看
Description
robot arm performed tasks involving the manipulation of blocks.
In this problem you will model a simple block world under certain rules and constraints. Rather than determine how to achieve a specified state, you will ``program'' a robotic arm to respond to a limited set of commands.
The
The problem is to parse a series of commands that instruct a robot arm in how to manipulate blocks that lie on a flat table. Initially there are nblocks
on the table (numbered from 0 to n-1) with block bi adjacent
to block bi+1 for all
as
shown in the diagram below:
Figure: Initial Blocks World
The valid commands for the robot arm that manipulates blocks are:
move a onto b
where a and b are block numbers, puts block a onto block b after returning any blocks that are stacked on top of blocks a and b to their initial positions.
move a over b
where a and b are block numbers, puts block a onto the top of the stack containing block b, after returning any blocks that are stacked on top of block a to their
initial positions.
pile a onto b
where a and b are block numbers, moves the pile of blocks consisting of block a, and any blocks that are stacked above block a, onto block b. All blocks on top of
block b are moved to their initial positions prior to the pile taking place. The blocks stacked above block aretain their order when moved.
pile a over b
where a and b are block numbers, puts the pile of blocks consisting of block a, and any blocks that are stacked above block a, onto the top of the stack containing block b.
The blocks stacked above block a retain their original order when moved.
quit
terminates manipulations in the block world.
Any command in which a = b or in which a and b are in the same stack of blocks is an illegal command. All illegal commands should be ignored and should have no affect on the configuration of blocks.
The
The input begins with an integer n on a line by itself representing
the number of blocks in the block world. You may assume that 0 < n <
25.
The number of blocks is followed by a sequence of block commands, one command per line. Your program should process all commands until the quit command is encountered.
You may assume that all commands will be of the form specified above. There will be no syntactically incorrect commands.
The
The output should consist of the final state of the blocks world. Each original block position numbered i (
where n is
the number of blocks) should appear followed immediately by a colon. If there is at least a block on it, the colon must be followed by one space, followed by a list of blocks that appear stacked in that position with each block number separated from other
block numbers by a space. Don't put any trailing spaces on a line.
There should be one line of output for each block position (i.e., n lines of output where n is the integer on the first line of input).
Sample
Sample
Background
Many areas of Computer Science use simple, abstract domains for both analytical and empirical studies. For example, an early AI study of planning and robotics (STRIPS) used a block world in which arobot arm performed tasks involving the manipulation of blocks.
In this problem you will model a simple block world under certain rules and constraints. Rather than determine how to achieve a specified state, you will ``program'' a robotic arm to respond to a limited set of commands.
The
Problem
The problem is to parse a series of commands that instruct a robot arm in how to manipulate blocks that lie on a flat table. Initially there are nblockson the table (numbered from 0 to n-1) with block bi adjacent
to block bi+1 for all
as
shown in the diagram below:
The valid commands for the robot arm that manipulates blocks are:
move a onto b
where a and b are block numbers, puts block a onto block b after returning any blocks that are stacked on top of blocks a and b to their initial positions.
move a over b
where a and b are block numbers, puts block a onto the top of the stack containing block b, after returning any blocks that are stacked on top of block a to their
initial positions.
pile a onto b
where a and b are block numbers, moves the pile of blocks consisting of block a, and any blocks that are stacked above block a, onto block b. All blocks on top of
block b are moved to their initial positions prior to the pile taking place. The blocks stacked above block aretain their order when moved.
pile a over b
where a and b are block numbers, puts the pile of blocks consisting of block a, and any blocks that are stacked above block a, onto the top of the stack containing block b.
The blocks stacked above block a retain their original order when moved.
quit
terminates manipulations in the block world.
Any command in which a = b or in which a and b are in the same stack of blocks is an illegal command. All illegal commands should be ignored and should have no affect on the configuration of blocks.
The
Input
The input begins with an integer n on a line by itself representingthe number of blocks in the block world. You may assume that 0 < n <
25.
The number of blocks is followed by a sequence of block commands, one command per line. Your program should process all commands until the quit command is encountered.
You may assume that all commands will be of the form specified above. There will be no syntactically incorrect commands.
The
Output
The output should consist of the final state of the blocks world. Each original block position numbered i (where n is
the number of blocks) should appear followed immediately by a colon. If there is at least a block on it, the colon must be followed by one space, followed by a list of blocks that appear stacked in that position with each block number separated from other
block numbers by a space. Don't put any trailing spaces on a line.
There should be one line of output for each block position (i.e., n lines of output where n is the integer on the first line of input).
Sample
Input
10 move 9 onto 1 move 8 over 1 move 7 over 1 move 6 over 1 pile 8 over 6 pile 8 over 5 move 2 over 1 move 4 over 9 quit
Sample
Output
0: 0 1: 1 9 2 4 2: 3: 3 4: 5: 5 8 7 6 6: 7: 8: 9:
题目:给你n个方块,有四种操作: 1.move a onto b,把a和b上面的方块都放回原来位置,然后把a放到b上面; 2.move a over b,把a上面的放回原处,然后把a放在b所在的方块堆的上面; 3.pile a onto b,把b上面的放回原来位置,然后把a和a上面的方块整体放到b上面; 4.pile a over b,把a和a上面的方块整体放到b所在堆的上面。 定义两个基本操作: 1.将a上面的还原init_place(a); 2.将a和上面的(可以没有上面的)放到b上面pile_a_to_b(a,b)。 那么上述的四组操作就变成下面了: 1.move a onto b,init_place(a);init_place(b);pile_a_to_b(a,b); 2.move a over b,init_place(a);pile_a_to_b(a,b); 3.pile a onto b,init_place(b);pile_a_to_b(a,b); 4.pile a over b,pile_a_to_b(a,b)。 #include<iostream> #include<vector> #include<cstdio> #include<stack> #include<cstring> using namespace std; stack<int> vv[300]; int place[25],top[25],s[30][30]; void init_place(int a)//将a还原 { int block=0,id=place[a]; if(vv[id].empty()) return ; //cout<<block<<endl; while(vv[id].top()!=a) { //cout<<vv[id].top()<<endl; block=vv[id].top(); place[block]=block; vv[block].push(block);// vv[id].pop(); } //cout<<vv[a].top()<<endl; } int temp[30]; void pile_a_to_b(int a,int b) { int topt=-1,id=place[a],ID=place[b]; while(vv[id].top()!=a) temp[++topt]=vv[id].top(),vv[id].pop(); int x=vv[id].top(); // printf(" %d\n",x); if(vv[id].top()==a) vv[id].pop(); place[a]=ID; vv[ID].push(a); while(topt>=0) { place[temp[topt]]=ID; vv[ID].push(temp[topt--]); } } int main() { int n,a,b; char op[6],type[6],x[30]; while ( ~scanf("%d",&n) ) { for ( int i = 0 ; i < n ; ++ i ) { vv[i].push(i) ; place[i] = i; //top[i] = 0; } while(~scanf("%s",op)&&op[0]!='q') { scanf("%d%s%d",&a,type,&b); if(place[a]==place[b]) continue; if(op[0]=='m') init_place(a); if(type[1]=='n') init_place(b); pile_a_to_b(a,b); } memset(x,0,sizeof x); for(int i=0;i<n;i++) { printf("%d:",i); int now=0,j=0; while(!vv[i].empty()) { x[j++]=vv[i].top(); vv[i].pop(); } for(int i=j-1;i>=0;i--) printf(" %d",x[i]); puts(""); } } return 0; }
相关文章推荐
- linux-tar(转)
- MFC Button Control事件获取的两种方法
- thinkphp中的session的使用和理解!
- MySQL- 数据类型
- Node.js中Process.nextTick()和setImmediate()的区别
- 四、用“”或构造函数创建Java的String区别
- ARM第一部分-S5PV210的内存什么的地址映射详解
- 各种内部排序算法
- centos 7 安装MySQL(笔记)
- [手游新项目历程]第4天-PushFramework资料
- iOS上传失败提示"Request failed: unacceptable content-type: text/html"
- Win10,Win7,WinServer2012,WinServer2008内存最大支持
- af33 ARM第一部分-ARM体系结构要点总结
- 多态
- 控制器切换(网易新闻效果)
- elasticsearch2.2 集群搭建各种坑
- javascript photo http://www.cnblogs.com/5ishare/tag/javascript/
- 诛仙手游-各属性道法换算
- 三、为什么String在Java中是不可更改的
- svn怎么切换用户