What does mean this..statement it follows: split multiple line to input

Question

I have seen many codes showing this..

Answer 1

Split input into multiple lines, I guess? This could either refer to splitting one line of input into multiple lines or to the fact that you have to give all input at once in Sololearn, each input in a separate line, immediately after you run the program

Answer 2

I have noticed it

Answer 3

separate your inputs with a space.