/usr/lib/x86_64-linux-gnu/libglpk.so.36 is in libglpk36 4.52.1-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libglpk.so.36.0.1
/usr/lib/x86_64-linux-gnu/libglpk.so.36.0.1