Merge pull request #5 from thaodtp/master

Merge pull request #7 from nguyenquanghuy1997/master
Merge pull request #6 from thaodtp/master

1
Merge pull request #9 from nguyenquanghuy1997/master

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Merge pull request #8 from a05169/master

a
Merge pull request #6 from thaodtp/master

a