ABCPATH - ABC Path
You will be given a 2-dimensional grid of letters. Find the length of the longest path of consecutive letters, starting at 'A'. Paths can step from one letter in the grid to any adjacent letter (horizontally, vertically, or diagonally).
For example, in the following grid, there are several paths from 'A' to 'D', but none from 'A' to 'E':
One such path is:
Each test case will start with a line contains two integers H, W the height and width of the grid respectively 1 <= H, W <= 50. Then H lines follow each of W uppercase letters only. Input terminates with H = 0 and W = 0.
For each test case print “Case C: X” without quotes where C is the case number starting with 1 and X is the solution.
Sample Input: 4 3 ABE CFG BDH ABC 0 0 Sample Output: Case 1: 4
finally accepted :p
FIRST dfs prob !! Ac :)
This is easy i don't know why it has 20% success rate :D
Well , instead of saying DFS , i will say recursion with memoization
mr salimi what r u doing ?
Harsh Vardhan Ladha:
Consider the case when matrix do not have character A
Steven Hans Limantoro:
Multisource BFS is your friend (y)Last edit: 2015-07-16 18:40:19
One TLE, One WA.first use bfs...then output error.haha
Easy one...silly mistake costed me WA...just use DFS nd optimize it !!!!!
|Added by:||Ali Arous|
|Cluster:||Cube (Intel G860)|
|Languages:||All except: ASM64|
|Resource:||FCIS Local Contest 2012|