readme fixed

README.md

@@ -1,5 +1,15 @@
 # Solutions in Rust of some competitive programming problems
 
-Made for the course "Competitive Programming" (year 23/24) at the University of Pisa, department of Computer Science
+Created for the "Competitive Programming" course (academic year 23/24) at the Department of Computer Science of the University of Pisa.
 
 > Course Page: https://pages.di.unipi.it/rossano/competitive/
+
+## Problems solved
+<!-- create a table with the day on the first col and the problems on the second  -->
+
+
+| Day | Problems |
+| --- | -------- |
+| 2023-09-18 | [Leaders in an Array](https://github.com/lukefleed/competitive-programming/tree/main/2023_09_18/learders_in_an_array) <br> [Maximum Subarray](https://github.com/lukefleed/competitive-programming/tree/main/2023_09_18/maximum_subarray) <br> [Missing Number](https://github.com/lukefleed/competitive-programming/tree/main/2023_09_18/missing_number) |
+| 2023-09-21 | [Sliding Window Maximum](https://github.com/lukefleed/competitive-programming/tree/main/2023_09_21/sliding-window-maximum) <br> [Trapping Rain Water](https://github.com/lukefleed/competitive-programming/tree/main/2023_09_21/trapping-rain-water) |
+| 2023-09-25 | [Find Minimum in a Rotated Sorted Array](https://github.com/lukefleed/competitive-programming/tree/main/2023_09_25/find-minimum-in-rotated-sorted-array) <br> [Find Peak Element](https://github.com/lukefleed/competitive-programming/tree/main/2023_09_25/find-peak-element) <br> [First and Last Position of Element in Sorted Array](https://github.com/lukefleed/competitive-programming/tree/main/2023_09_25/First_and_Last_Position_of_Element_in_Sorted_Array) |