Help POI problem Maze

Правка en1, от XmtosX, 2018-08-14 10:50:38

Can someone explain the solution to this problem? I've been trying so hard to solve it since yesterday but I couldn't find a solution for it.

https://szkopul.edu.pl/problemset/problem/TE77UNYEUxsFcrRxYRPc99na/site/?key=statement

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en1 Английский XmtosX 2018-08-14 10:50:38 343 Initial revision (published)