/usr/ is in libcupt4-dev 2.9.4ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/cupt/cache/
/usr/lib/
/usr/include/
/usr/include/cupt/
/usr/include/cupt/download/
/usr/include/cupt/download/uri.hpp
/usr/include/cupt/download/progresses/
/usr/include/cupt/download/progresses/console.hpp
/usr/include/cupt/download/manager.hpp
/usr/include/cupt/download/methodfactory.hpp
/usr/include/cupt/download/progress.hpp
/usr/include/cupt/download/method.hpp
/usr/include/cupt/fwd.hpp
/usr/include/cupt/cache.hpp
/usr/include/cupt/hashsums.hpp
/usr/include/cupt/range.hpp
/usr/include/cupt/cache/relation.hpp
/usr/include/cupt/cache/sourcepackage.hpp
/usr/include/cupt/cache/sourceversion.hpp
/usr/include/cupt/cache/binarypackage.hpp
/usr/include/cupt/cache/package.hpp
/usr/include/cupt/cache/releaseinfo.hpp
/usr/include/cupt/cache/version.hpp
/usr/include/cupt/cache/binaryversion.hpp
/usr/include/cupt/system/
/usr/include/cupt/system/resolver.hpp
/usr/include/cupt/system/snapshots.hpp
/usr/include/cupt/system/state.hpp
/usr/include/cupt/system/worker.hpp
/usr/include/cupt/system/resolvers/
/usr/include/cupt/system/resolvers/native.hpp
/usr/include/cupt/file.hpp
/usr/include/cupt/config.hpp
/usr/include/cupt/common.hpp
/usr/include/cupt/versionstring.hpp
/usr/include/cupt/stringrange.hpp
/usr/include/cupt/format2.hpp
/usr/include/cupt/packagename.hpp
/usr/share/
/usr/share/doc/
/usr/share/doc/libcupt4-dev/
/usr/share/doc/libcupt4-dev/copyright
/usr/lib/libcupt4.so
/usr/share/doc/libcupt4-dev/NEWS.Debian.gz
/usr/share/doc/libcupt4-dev/changelog.gz