Java Error: 'illegal character:  ' in CheapestPriceSolution.java

These errors indicate that there are illegal characters in the code file, specifically the character ' ' which is a non-breaking space. This character may have been accidentally inserted while copying and pasting code from a source that uses a different encoding.

To fix this issue, you can manually remove the non-breaking spaces and replace them with regular spaces. Alternatively, you can try saving the file with a different encoding that does not use non-breaking spaces.