Adding  9: (6, 9)
Adding  2: (10, 10)
Adding  0: (7, 4)
Adding  8: (9, 2)
Adding  3: (7, 2)
Adding  5: (7, 1)
Adding  7: (5, 1)
Adding  6: (5, 4)
Adding  4: (10, 10)
Adding  1: (6, 4)

Removing  4: (10, 10)
Removing  2: (10, 10)
Removing  8: (9, 2)
Removing  0: (7, 4)
Removing  3: (7, 2)
Removing  5: (7, 1)
Removing  9: (6, 9)
Removing  1: (6, 4)
Removing  6: (5, 4)
Removing  7: (5, 1)

Adding  0: (10, 7)
Adding  1: (6, 7)
Adding  2: (2, 5)
Adding  3: (5, 2)
Adding  4: (10, 2)

Modifying 1 to (-1, -1)
Modifying max to (7, 7)

Removing  4: (10, 2)
Removing  0: (7, 7)
Removing  3: (5, 2)
Removing  2: (2, 5)
Removing  1: (-1, -1)