How can we code c++ using time function without geting runtime error. And how can we correct runtime errors?

Question

some codes are coded having runtime error.
https://www.sololearn.com/discuss/1549338/?ref=app

Answer 1

Unfortunately, SoloLearn servers are so busy that the app times out and puts out an error. It took me 20 tries to get this valid program to run. This code uses the time function.
https://code.sololearn.com/c76te45Hor4Q