The main file is m61.cc and edits/adding code is only done on this file. All other files are as is. I have to make this program pass a total of 40 tests (included in the ZIP file). I have managed to pass 38 tests but need help passing test039 and test040. The tests are run via docker using the 'make check' command in linux terminal. Afterwards, I need to make sure all tests pass with sanitizers enabled as well (use 'make SAN=1 check'). So needs to be checked for possible undefined behavior. I need this done before end of the day Sunday 09/20/20