Update README.md

zenglekidd · web-flow · commit d60137c30311 · 2020-10-25T22:20:02.000+08:00
diff --git a/README.md b/README.md
@@ -26,15 +26,15 @@ Total: 41 / 41
 
 Stage 3 (Leetcode# <= 200)
 - [x] [Top 100 Liked Problems - LeetCode](https://leetcode.com/problemset/top-100-liked-questions/) (Start: 43 / 100 Solved, Current: 100 / 100 Solved, Progress: 57 / 57)
-- [ ] [Backtracking - LeetCode](https://leetcode.com/tag/backtracking/) (Start: 6 / 21 Solved, Current: 18 / 21 Solved, Progress: 12 / 15)
+- [ ] [Backtracking - LeetCode](https://leetcode.com/tag/backtracking/) (Start: 6 / 21 Solved, Current: 19 / 21 Solved, Progress: 13 / 15)
 - [x] [Sliding Window - LeetCode](https://leetcode.com/tag/sliding-window/) (Start: 2 / 2 Solved, Current: 2 / 2 Solved)
 - [ ] [Dynamic Programming - LeetCode](https://leetcode.com/tag/dynamic-programming/) (Start: 11 / 27 Solved, Current: 15 / 27 Solved, Progress: 4 / 16)
 - [x] [Divide and Conquer - LeetCode](https://leetcode.com/tag/divide-and-conquer/) (Start: 4 / 4 Solved, Current: 4 / 4 Solved)
 - [x] [Graph - LeetCode](https://leetcode.com/tag/graph/) (Start: 1 / 1 Solved, Current: 1 / 1 Solved)
 - [x] [Breadth-first Search - LeetCode](https://leetcode.com/tag/breadth-first-search/) (Start: 3 / 10 Solved, Current: 10 / 10 Solved, Progress: 7 / 7)
 - [x] [Depth-first Search - LeetCode](https://leetcode.com/tag/depth-first-search/) (Start: 8 / 21 Solved, Current: 21 / 21 Solved, Progress: 13 / 13)
 
-Total: 100 / 111
+Total: 101 / 111
 
 Stage 4
 From a reference [here](https://leetcode.com/discuss/interview-experience/904425/facebook-amazon-apple-google-nyc-oct-2020-offerofferghostedoffer)
