For real numbers $x$ and $y,$ find all possible values of
\[\lfloor x + y \rfloor - \lfloor x \rfloor - \lfloor y \rfloor.\]Enter all possible values, separated by commas.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
For real numbers $x$ and $y,$ find all possible values of
\[\lfloor x + y \rfloor - \lfloor x \rfloor - \lfloor y \rfloor.\]Enter all possible values, separated by commas.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
0,1
For real numbers $x$ and $y,$ find all possible values of
\[\lfloor x + y \rfloor - \lfloor x \rfloor - \lfloor y \rfloor.\]Enter all possible values, separated by commas.
train