[ImgBot] Optimize images

*Total -- 2,831.78kb -> 2,025.21kb (28.48%)

/solution/0900-0999/0963.Minimum Area Rectangle II/images/3.png -- 23.81kb -> 5.46kb (77.08%)
/solution/0900-0999/0986.Interval List Intersections/images/interval1.png -- 30.72kb -> 7.16kb (76.69%)
/solution/0500-0599/0590.N-ary Tree Postorder Traversal/images/narytreeexample.png -- 30.02kb -> 8.57kb (71.44%)
/solution/0500-0599/0589.N-ary Tree Preorder Traversal/images/narytreeexample.png -- 30.02kb -> 8.57kb (71.44%)
/solution/0500-0599/0559.Maximum Depth of N-ary Tree/images/narytreeexample.png -- 30.02kb -> 8.57kb (71.44%)
/solution/1000-1099/1091.Shortest Path in Binary Matrix/images/example1_1.png -- 19.09kb -> 5.96kb (68.78%)
/solution/1100-1199/1105.Filling Bookcase Shelves/images/shelves.png -- 13.08kb -> 4.13kb (68.42%)
/solution/0900-0999/0963.Minimum Area Rectangle II/images/2.png -- 8.75kb -> 3.01kb (65.6%)
/solution/1000-1099/1039.Minimum Score Triangulation of Polygon/images/minimum-score-triangulation-of-polygon-1.png -- 5.52kb -> 1.95kb (64.69%)
/solution/1000-1099/1091.Shortest Path in Binary Matrix/images/example2_1.png -- 23.72kb -> 8.54kb (64.01%)
/solution/0900-0999/0958.Check Completeness of a Binary Tree/images/complete-binary-tree-2.png -- 5.33kb -> 2.04kb (61.79%)
/solution/0400-0499/0463.Island Perimeter/images/island.png -- 1.95kb -> 0.75kb (61.55%)
/solution/0900-0999/0963.Minimum Area Rectangle II/images/4c.png -- 7.52kb -> 2.93kb (61.02%)
/solution/0900-0999/0944.Delete Columns to Make Sorted/images/944_2.png -- 10.29kb -> 4.02kb (60.97%)
/solution/0900-0999/0944.Delete Columns to Make Sorted/images/944_1.png -- 9.24kb -> 3.63kb (60.78%)
/solution/0900-0999/0965.Univalued Binary Tree/images/unival_bst_1.png -- 6.80kb -> 2.71kb (60.06%)
/solution/0900-0999/0958.Check Completeness of a Binary Tree/images/complete-binary-tree-1.png -- 4.93kb -> 1.97kb (59.98%)
/solution/0900-0999/0965.Univalued Binary Tree/images/unival_bst_2.png -- 6.99kb -> 3.06kb (56.25%)
/solution/0400-0499/0498.Diagonal Traverse/images/diagonal_traverse.png -- 24.00kb -> 10.83kb (54.9%)
/solution/0500-0599/0500.Keyboard Row/images/keyboard.png -- 36.39kb -> 17.00kb (53.29%)
/solution/0900-0999/0965.Univalued Binary Tree/images/screen-shot-2018-12-25-at-50104-pm.png -- 54.64kb -> 26.86kb (50.84%)
/solution/1100-1199/1192.Critical Connections in a Network/images/1537_ex1_2.png -- 7.57kb -> 3.74kb (50.63%)
/solution/0900-0999/0963.Minimum Area Rectangle II/images/1a.png -- 16.77kb -> 8.96kb (46.59%)
/solution/1200-1299/1203.Sort Items by Groups Respecting Dependencies/images/1359_ex1.png -- 2.77kb -> 1.48kb (46.55%)
/solution/1000-1099/1091.Shortest Path in Binary Matrix/images/example1_2.png -- 20.15kb -> 10.91kb (45.84%)
/solution/0900-0999/0965.Univalued Binary Tree/images/screen-shot-2018-12-25-at-50050-pm.png -- 54.66kb -> 30.50kb (44.2%)
/solution/0500-0599/0587.Erect the Fence/images/erect_the_fence_2.png -- 72.96kb -> 42.35kb (41.95%)
/solution/0900-0999/0959.Regions Cut By Slashes/images/3.png -- 1.44kb -> 0.84kb (41.45%)
/solution/1000-1099/1028.Recover a Tree From Preorder Traversal/images/recover-a-tree-from-preorder-traversal.png -- 53.17kb -> 33.45kb (37.08%)
/solution/0900-0999/0959.Regions Cut By Slashes/images/1.png -- 1.00kb -> 0.64kb (36.09%)
/solution/1000-1099/1028.Recover a Tree From Preorder Traversal/images/screen-shot-2019-04-10-at-114955-pm.png -- 37.86kb -> 24.46kb (35.38%)
/solution/1000-1099/1091.Shortest Path in Binary Matrix/images/example2_2.png -- 27.13kb -> 17.59kb (35.16%)
/solution/1000-1099/1022.Sum of Root To Leaf Binary Numbers/images/sum-of-root-to-leaf-binary-numbers.png -- 45.58kb -> 29.56kb (35.14%)
/solution/0900-0999/0968.Binary Tree Cameras/images/bst_cameras_02.png -- 10.37kb -> 6.75kb (34.91%)
/solution/1000-1099/1080.Insufficient Nodes in Root to Leaf Paths/images/insufficient-1.png -- 71.66kb -> 46.65kb (34.9%)
/solution/1000-1099/1080.Insufficient Nodes in Root to Leaf Paths/images/insufficient-11.png -- 71.66kb -> 46.65kb (34.9%)
/solution/1000-1099/1080.Insufficient Nodes in Root to Leaf Paths/images/insufficient-4.png -- 46.62kb -> 30.58kb (34.4%)
/solution/0500-0599/0587.Erect the Fence/images/erect_the_fence_1.png -- 92.26kb -> 60.75kb (34.15%)
/solution/1000-1099/1080.Insufficient Nodes in Root to Leaf Paths/images/insufficient-2.png -- 42.60kb -> 28.06kb (34.14%)
/solution/1000-1099/1080.Insufficient Nodes in Root to Leaf Paths/images/insufficient-3.png -- 53.80kb -> 35.46kb (34.09%)
/solution/1100-1199/1145.Binary Tree Coloring Game/images/1480-binary-tree-coloring-game.png -- 67.74kb -> 45.35kb (33.05%)
/solution/1100-1199/1192.Critical Connections in a Network/images/critical-connections-in-a-network.png -- 39.41kb -> 26.44kb (32.91%)
/solution/1000-1099/1028.Recover a Tree From Preorder Traversal/images/screen-shot-2019-04-10-at-114101-pm.png -- 37.02kb -> 24.93kb (32.66%)
/solution/0900-0999/0999.Available Captures for Rook/images/1253_example_1_improved.png -- 22.51kb -> 15.27kb (32.14%)
/solution/0900-0999/0968.Binary Tree Cameras/images/bst_cameras_01.png -- 7.25kb -> 5.00kb (31.11%)
/solution/0900-0999/0971.Flip Binary Tree To Match Preorder Traversal/images/1219-02.png -- 27.47kb -> 19.09kb (30.51%)
/solution/1100-1199/1110.Delete Nodes And Return Forest/images/screen-shot-2019-07-01-at-53836-pm.png -- 26.34kb -> 18.42kb (30.07%)
/solution/1000-1099/1008.Construct Binary Search Tree from Preorder Traversal/images/1266.png -- 31.40kb -> 22.02kb (29.87%)
/solution/0900-0999/0999.Available Captures for Rook/images/1253_example_3_improved.png -- 25.94kb -> 18.43kb (28.93%)
/solution/0900-0999/0999.Available Captures for Rook/images/1253_example_2_improved.png -- 29.98kb -> 21.58kb (28.04%)
/solution/0900-0999/0971.Flip Binary Tree To Match Preorder Traversal/images/1219-01.png -- 19.36kb -> 14.13kb (27.02%)
/solution/1000-1099/1080.Insufficient Nodes in Root to Leaf Paths/images/insufficient-5.png -- 4.64kb -> 3.44kb (25.94%)
/solution/0900-0999/0952.Largest Component Size by Common Factor/images/ex3.png -- 108.87kb -> 80.97kb (25.63%)
/solution/0900-0999/0993.Cousins in Binary Tree/images/q1248-02.png -- 18.89kb -> 14.23kb (24.68%)
/solution/0500-0599/0514.Freedom Trail/images/ring.jpg -- 99.35kb -> 78.20kb (21.29%)
/solution/1000-1099/1007.Minimum Domino Rotations For Equal Row/images/domino.png -- 14.30kb -> 11.31kb (20.95%)
/solution/0900-0999/0935.Knight Dialer/images/knight.png -- 14.79kb -> 11.92kb (19.4%)
/solution/0600-0699/0688.Knight Probability in Chessboard/images/knight.png -- 14.79kb -> 11.92kb (19.4%)
/solution/0500-0599/0529.Minesweeper/images/minesweeper_example_1.png -- 90.71kb -> 73.16kb (19.35%)
/solution/0500-0599/0529.Minesweeper/images/minesweeper_example_2.png -- 100.90kb -> 81.90kb (18.83%)
/solution/0900-0999/0993.Cousins in Binary Tree/images/q1248-03.png -- 14.65kb -> 11.98kb (18.23%)
/solution/0500-0599/0576.Out of Boundary Paths/images/out_of_boundary_paths_1.png -- 44.17kb -> 36.22kb (17.99%)
/solution/0500-0599/0554.Brick Wall/images/brick_wall.png -- 44.48kb -> 36.52kb (17.9%)
/solution/0900-0999/0952.Largest Component Size by Common Factor/images/ex2.png -- 14.42kb -> 11.91kb (17.4%)
/solution/0900-0999/0993.Cousins in Binary Tree/images/q1248-01.png -- 14.80kb -> 12.33kb (16.71%)
/solution/0900-0999/0994.Rotting Oranges/images/oranges.png -- 41.59kb -> 34.71kb (16.53%)
/solution/0500-0599/0576.Out of Boundary Paths/images/out_of_boundary_paths_2.png -- 46.95kb -> 39.32kb (16.26%)
/solution/0900-0999/0998.Maximum Binary Tree II/images/maximum-binary-tree-1-2.png -- 13.57kb -> 11.44kb (15.7%)
/solution/1000-1099/1026.Maximum Difference Between Node and Ancestor/images/2whqcep.jpg -- 25.49kb -> 21.57kb (15.37%)
/solution/0900-0999/0998.Maximum Binary Tree II/images/maximum-binary-tree-2-2.png -- 13.04kb -> 11.44kb (12.32%)
/solution/0900-0999/0998.Maximum Binary Tree II/images/maximum-binary-tree-3-2.png -- 12.58kb -> 11.16kb (11.29%)
/solution/0900-0999/0988.Smallest String Starting From Leaf/images/tree1.png -- 17.45kb -> 15.49kb (11.22%)
/solution/0900-0999/0988.Smallest String Starting From Leaf/images/tree2.png -- 18.16kb -> 16.13kb (11.17%)
/solution/0900-0999/0998.Maximum Binary Tree II/images/maximum-binary-tree-1-1.png -- 11.05kb -> 9.86kb (10.76%)
/solution/0900-0999/0909.Snakes and Ladders/images/snakes.png -- 140.25kb -> 126.91kb (9.51%)
/solution/0900-0999/0988.Smallest String Starting From Leaf/images/tree3.png -- 17.79kb -> 16.19kb (8.99%)
/solution/0900-0999/0998.Maximum Binary Tree II/images/maximum-binary-tree-3-1.png -- 10.77kb -> 9.83kb (8.74%)
/solution/0900-0999/0979.Distribute Coins in Binary Tree/images/tree4.png -- 26.58kb -> 24.27kb (8.69%)
/solution/0900-0999/0998.Maximum Binary Tree II/images/maximum-binary-tree-2-1.png -- 10.65kb -> 9.76kb (8.35%)
/solution/1100-1199/1162.As Far from Land as Possible/images/1336_ex2.jpeg -- 10.79kb -> 10.03kb (7.03%)
/solution/1100-1199/1162.As Far from Land as Possible/images/1336_ex1.jpeg -- 10.74kb -> 10.01kb (6.84%)
/solution/0900-0999/0979.Distribute Coins in Binary Tree/images/tree3.png -- 17.33kb -> 16.14kb (6.84%)
/solution/0900-0999/0987.Vertical Order Traversal of a Binary Tree/images/1236_example_1.png -- 5.27kb -> 4.91kb (6.7%)
/solution/0900-0999/0979.Distribute Coins in Binary Tree/images/tree1.png -- 17.86kb -> 16.70kb (6.5%)
/solution/0900-0999/0987.Vertical Order Traversal of a Binary Tree/images/tree2.png -- 13.25kb -> 12.41kb (6.35%)
/solution/0900-0999/0979.Distribute Coins in Binary Tree/images/tree2.png -- 20.33kb -> 19.05kb (6.33%)
/solution/1100-1199/1161.Maximum Level Sum of a Binary Tree/images/capture.jpeg -- 14.40kb -> 13.52kb (6.14%)
/solution/1100-1199/1104.Path In Zigzag Labelled Binary Tree/images/tree.png -- 52.39kb -> 49.34kb (5.83%)
/solution/1100-1199/1189.Maximum Number of Balloons/images/1536_ex2_upd.jpeg -- 15.72kb -> 14.83kb (5.67%)
/solution/1100-1199/1189.Maximum Number of Balloons/images/1536_ex1_upd.jpeg -- 12.81kb -> 12.23kb (4.55%)
/solution/0900-0999/0952.Largest Component Size by Common Factor/images/ex1.png -- 12.45kb -> 11.90kb (4.48%)
/solution/1000-1099/1035.Uncrossed Lines/images/142.png -- 31.67kb -> 30.37kb (4.1%)
/solution/0900-0999/0959.Regions Cut By Slashes/images/2.png -- 0.40kb -> 0.39kb (3.39%)
/solution/1100-1199/1184.Distance Between Bus Stops/images/untitled-diagram-1.jpg -- 9.86kb -> 9.66kb (1.99%)
/solution/1100-1199/1184.Distance Between Bus Stops/images/untitled-diagram-1-1.jpg -- 10.14kb -> 9.96kb (1.83%)
/solution/1100-1199/1184.Distance Between Bus Stops/images/untitled-diagram-1-2.jpg -- 9.85kb -> 9.68kb (1.73%)
/solution/0500-0599/0590.N-ary Tree Postorder Traversal/images/sample_4_964.png -- 30.75kb -> 30.37kb (1.24%)
/solution/0500-0599/0559.Maximum Depth of N-ary Tree/images/sample_4_964.png -- 30.75kb -> 30.37kb (1.24%)
/solution/0500-0599/0589.N-ary Tree Preorder Traversal/images/sample_4_964.png -- 30.75kb -> 30.37kb (1.24%)
/solution/0900-0999/0959.Regions Cut By Slashes/images/5.png -- 0.54kb -> 0.54kb (0.72%)
/solution/1000-1099/1038.Binary Search Tree to Greater Sum Tree/images/tree.png -- 20.74kb -> 20.62kb (0.58%)

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