#D2821. Animal Companion in Maze
Animal Companion in Maze
Animal Companion in Maze
Example
Input
2 1 1 2 2
Output
1
inputFormat
Input
2 1 1 2 2
outputFormat
Output
1
样例
2 1
1 2 21
Example
Input
2 1 1 2 2
Output
1
Input
2 1 1 2 2
Output
1
2 1
1 2 21