• The W, A, S, and D keys must be used to move the main character.
• The player should be able to move in these 4 directions: up, down, left, right.

Required Blocks

1. Sky
2. Ground
3. Stair
4. Wall
5. Item 0 (not collected)
6. Item 1 (not collected)
7. Item 2 (not collected)
8. Item 3 (collected)
9. Door (Exit)

Current Characters

• '0' for sky
• '1' for blocks
• 'E' for exit
• 'C' for collectibles
• 'P' for player

• The map must be rectangular
• The map must be closed/surrounded by walls
• You have to check if there's a valid path in the map
• You must be able to parse any kind of map, as long as it respects the above rules.
• If any misconfiguration of any kind is encountered in the file, the program must exit in a clean way, and return "Error\n" followed by an explicit message of your choice.

Blocks that moves

• Item Blocks (if it is not collected)
• normal blocks in the sky

mod 6
remaining 0, 5 -> 0
remaining 1, 4 -> 1
remaining 2, 3 -> 2