Problem Description
PusherBoy is an online game http://www.hacker.org/push . There is an R * C grid, and there are piles of blocks on some positions. The goal is to clear the blocks by pushing into them.

You should choose an empty area as the initial position of the PusherBoy. Then you can choose which direction (U for up, D for down, L for left and R for right) to push. Once the direction is chosen, the PusherBoy will walk ahead until he met a pile of blocks (Walking outside the grid is invalid). Then he remove one block from the pile (so if the pile contains only one block, it will become empty), and push the remaining pile of blocks to the next area. (If there have been some blocks in the next area, the two piles will form a new big pile.)

Please note if the pusher is right up against the block, he can't remove and push it. That is, there must be a gap between the pusher and the pile. As the following figure, the pusher can go up, but cannot go down. (The cycle indicates the pusher, and the squares indicate the blocks. The nested squares indicate a pile of two blocks.)

And if a whole pile is pushed outside the grid, it will be considered as cleared.

Input
There are several test cases in each input. The first two lines of each case contain two numbers C and R. (R,C <= 25) Then R lines follow, indicating the grid. '.' stands for an empty area, and a lowercase letter stands for a pile of blocks. ('a' for one block, 'b' for two blocks, 'c' for three, and so on.)

Output
Output three lines for each case. The first two lines contains two numbers x and y, indicating the initial position of the PusherBoy. (0 <= x < R, 0 <= y < C). The third line contains a moving sequence contains 'U', 'D', 'L' and 'R'. Any correct answer will be accepted.

Sample Input
3
7
...
...
.b.
...
...
.a.
...

Sample Output
4
1
UDU

C语言编程的思路和主要代码（重要）

C语言编程实现俄罗斯方块代码

qwb去面试 思路+代码
Problem G: qwb去面试 Time Limit: 1 Sec  Memory Limit: 128 MB Submit: 1790  Solved: 301 [Submit][Status][Web Board] Description 某一天，qwb去WCfun面试，面试官问了他一个问题：把一个正整数n拆分成若干个正整数的和，请求出这些数乘积的最大值。 qwb比较猥

map实现多项式运算的思路！

&amp;lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.01 Transitional//EN&quot; &quot;http://www.w3.org/TR/html4/loose.dtd&quot;&amp;gt; &amp;lt;html lang=&quot;en&quot;&amp;gt; &amp;lt;head&amp;gt;     &amp;lt;meta http-equiv=&quot;Content-Type&quot; cont

ctrl+e撤消过头了....

#include rnint main ()rnrn char * ptr = "how are you";rn reverse_string(ptr);rn printf("%s",ptr);rnrnvoid reverse_string(char * string)rnrn char * last_string;rn for(last_string = string; *last_string != '\0';last_string++)rn ;rn last_string--;rn while(string < last_string)rn rn char temp;rn temp = *string;rn *string++ = *last_string;rn *last_string-- = temp; rn rnrn这个代码是C和指针中第六章第三个编程习题的答案。首先，我想问的是，while(string < last_string)rn这里比较的是两个内存地址的大小吗？我调试的时候，string 显示的是 我设置的那个字符串，而last_string 显示的这个字符串的最后一个字母。而且这个代码，我去运行的时候也是有问题的。请人来给我讲解下，最后一个个的讲解。还有就是这个代码为什么运行会出问题呢？ 还有我是新人一个啊，结贴也不太会，不要见怪啊。吃过晚饭来看看，求高人解答。

html2pdf 实现思路和代码
NULL 博文链接：https://feiyan35488.iteye.com/blog/1008997

import java.util.*; /*杨辉三角形 * 1 * 1 1 * 1 2 1 * 1 3 3 1 * 1 4 6 4 1 * 分析：看这种图像的规律 * 1：任何一行的第一列跟最后一列都是1 * 2：从第三行开始，每一个数据都是它上一行的前一列跟上一行的本列之和 * 步骤 * 1：首先定义一个二维数组，行数如果为n，那么先将列数也为n ,n这个数
c语言编程代码

C语言编程代码

delphi怎样去实现位或运算。

webBrowser 怎么去实现

C语言编程中的一个问题.,

/* main.c */rn#include rnint mian()rnrn float ff = 10.33;rn prt_f(ff);rnrnrn/*prt.c*/rnvoid prt_f(float ff)rnrn printf("%f",ff);rnrnrn/*makefile*/rnmain: main.o prt.orn gcc main.o prt.o -o mainrnmain.o: main.crn gcc -c main.crnprt.o: prt.crn gcc -c prt.crnrnrn可是运行结果确 -2.000000 请问这时怎么解释。可是对于别的数据类型，(如doublernint，char，char*)则能正常显示。rnrn若在mian函数前加上声明extern void prt_f(float ff);则显示正常10.33；rnrnrn或者把prt.c变为prt.h在main.c 中 #include "prt.h"也工作正常(这倒是很好理解的)rn水能给出前面的解答。谢谢！！