7IBKFG3D35V2UV3JTGM36ZYCF5H3VTLNHAQT24VYKMXQFEJ247IQC
2JT446RMTHP23QL57CULGRWI7A7ATV7HRV2D5FZ4SULIDU5AD4KAC
2Q7SZHYMAFCYLG5MROYQ4BJ7HDIASPLIZJP7SM7BNX4GESUCZXJQC
VRPOSMITS7VRSIJU6YNEBELCUBTHPMPJD6F6F5PE35R2KECS42KAC
-- @'abs'@ and @'signum'@ don't really make sense for nimbers. They are defined as @'id'@ here.
-- @'abs'@ and @'signum'@ don't really make sense for nimbers.
signum = id
signum 0 = 0 signum _ = 1
signum 0 = 0
signum _ = 1