题目 1077: Biggest Number

时间限制: 1Sec 内存限制: 128MB 提交: 595 解决: 89

题目描述

You have a maze with obstacles and non-zero digits in it:

 

 

You can start from any square, walk in the maze, and finally stop at some square. Each step, you may only walk into one of the four neighbouring squares (up, down, left, right) and you cannot walk into obstacles or walk into a square more than once. When you finish, you can get a number by writing down the digits you encounter in the same order as you meet them. For example, you can get numbers 9784, 4832145 etc. The biggest number you can get is 791452384, shown in the picture above.

 

Your task is to find the biggest number you can get.

 

输入

 There will be at most 25 test cases. Each test begins with two integers R and C (2<=R,C<=15,R*C<=30), the number of rows and columns of the maze. The next R rows represent the maze. Each line contains exactly C characters (without leading or trailing spaces), each of them will be either '#' or one of the nine non-zero digits. There will be at least one non-obstacle squares (i.e. squares with a non-zero digit in it) in the maze. The input is terminated by a test case with R=C=0, you should not process it.

 

输出

 For each test case, print the biggest number you can find, on a single line.

样例输入
3 7
##9784#
##123##
##45###
0 0
样例输出
791452384
提示

零基础的同学可以先学习基础,教程见:  C语言教程C++教程编译器教程数据结构教程Python教程单片机教程

视频教学见视频网课

标签  标签反馈

通过率

统 计

 提交 595
 正确 89
 格式错误 0
 答案错误 114
 时间超限 257
 输出超限 21
 运行错误 60
 编译错误 102