f(x) = ||x| - 1| - x
(64, -1)
(38, -1)
(60, -1)
(90, -1)
(78, -1)
(88, -1)
(72, -1)
(18, -1)
(94, -1)
(54, -1)
(92, -1)
(96, -1)
(24, -1)
(12, -1)
(70, -1)
(36, -1)
(46, -1)
(82, -1)
(2, -1)
(42, -1)
(66, -1)
(62, -1)
(4, -1)
(22, -1)
(10, -1)
(52, -1)
(74, -1)
(68, -1)
(40, -1)
(76, -1)
(80, -1)
(98, -1)
(86, -1)
(28, -1)
(6, -1)
(44, -1)
(56, -1)
(16, -1)
(30, -1)
(14, -1)
(26, -1)
(58, -1)
(20, -1)
(8, -1)
(48, -1)
(100, -1)
(84, -1)
(50, -1)
(32, -1)
(-0.25, 1)
(34, -1)