Updated README.md

Author: BrandonTang89

README.md

@@ -1268,5 +1268,9 @@ Python code usually requires Python 3.8 to work.
 | 86 | [CF2029_C_New_Rating](https://codeforces.com/contest/2029/problem/C) | [C++](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2029_C_New_Rating.cpp) |
 | 87 | [CF2029_D_Cool_Graph](https://codeforces.com/contest/2029/problem/D) | [C++](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2029_D_Cool_Graph.cpp) |
 | 88 | [CF2029_E_Common_Generator](https://codeforces.com/contest/2029/problem/E) | [C++](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2029_E_Common_Generator.cpp) |
-| 89 | [CF2036_E_Reverse_the_Rivers](https://codeforces.com/contest/2036/problem/E) | [Python](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2036_E_Reverse_the_Rivers.py) |
-| 90 | [CF2036_F_XORificator_3000](https://codeforces.com/contest/2036/problem/F) | [Python](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2036_F_XORificator_3000.py) |
+| 89 | [CF2031_A_Penchick_and_Modern_Monument](https://codeforces.com/contest/2031/problem/A) | [Python](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2031_A_Penchick_and_Modern_Monument.py) |
+| 90 | [CF2031_B_Penchick_and_Satay_Sticks](https://codeforces.com/contest/2031/problem/B) | [Python](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2031_B_Penchick_and_Satay_Sticks.py) |
+| 91 | [CF2031_C_Penchick_and_BBQ_Buns](https://codeforces.com/contest/2031/problem/C) | [Python](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2031_C_Penchick_and_BBQ_Buns.py) |
+| 92 | [CF2031_D_Penchick_and_Desert_Rabbit](https://codeforces.com/contest/2031/problem/D) | [C++](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2031_D_Penchick_and_Desert_Rabbit.cpp) |
+| 93 | [CF2036_E_Reverse_the_Rivers](https://codeforces.com/contest/2036/problem/E) | [Python](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2036_E_Reverse_the_Rivers.py) |
+| 94 | [CF2036_F_XORificator_3000](https://codeforces.com/contest/2036/problem/F) | [Python](https://github.com/BrandonTang89/Competitive_Programming_4_Solutions/blob/main/Other_Tasks/CF2036_F_XORificator_3000.py) |