HW #3
Old  home works
Merge remote-tracking branch 'upstream/master'
Added test cases for HW4
Added main script file example
Merge pull request #17 from AlexKushn/master

Old home works
Merge pull request #20 from shybkoi/hw3_s_shybkoi

HW #3
Merge pull request #2 from pybursa/master

update