/usr/ is in librandom-numbers-dev 0.3.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/librandom_numbers.so
/usr/share/
/usr/share/random_numbers/
/usr/share/random_numbers/cmake/
/usr/share/random_numbers/cmake/random_numbersConfig-version.cmake
/usr/share/random_numbers/cmake/random_numbersConfig.cmake
/usr/share/random_numbers/package.xml
/usr/share/doc/
/usr/share/doc/librandom-numbers-dev/
/usr/share/doc/librandom-numbers-dev/copyright
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/random_numbers.pc
/usr/include/
/usr/include/random_numbers/
/usr/include/random_numbers/random_numbers.h
/usr/share/doc/librandom-numbers-dev/changelog.Debian.gz