/usr/ is in libmapipp-dev 1:2.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/libmapipp-dev/
/usr/share/doc/libmapipp-dev/copyright
/usr/include/
/usr/include/libmapi++/
/usr/include/libmapi++/attachment.h
/usr/include/libmapi++/profile.h
/usr/include/libmapi++/folder.h
/usr/include/libmapi++/clibmapi.h
/usr/include/libmapi++/session.h
/usr/include/libmapi++/message.h
/usr/include/libmapi++/message_store.h
/usr/include/libmapi++/mapi_exception.h
/usr/include/libmapi++/libmapi++.h
/usr/include/libmapi++/object.h
/usr/include/libmapi++/property_container.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libmapi++.pc
/usr/share/doc/libmapipp-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libmapipp.so