Solutions to CSES Problems

Introductory Problems

1. Weird Algorithm [source] [solution]
2. Missing Number [source] [solution]
3. Repetitions [source] [solution]
4. Increasing Array [source] [solution]
5. Permutations [source] [solution]
6. Number Spiral [source] [solution]
7. Two Knights [source] [solution]
8. Two Sets [source] [solution]
9. Bit Strings [source] [solution]
10. Trailing Zeros [source] [solution]
11. Coin Piles [source] [solution]
12. Palindrome Reorder [source] [solution]
13. Gray Code [source] [solution]
14. Tower of Hanoi [source] [solution]
15. Creating Strings [source] [solution]
16. Apple Division [source] [solution]
17. Chessboard and Queens [source] [solution]
18. Digit Queries [source] [solution]
19. Grid Paths [source] [solution]

Sorting and Searching

1. Distinct Numbers [source] [solution]
2. Apartments [source] [solution]
3. Ferris Wheel [source] [solution]
4. Concert Tickets [source] [solution]
5. Restaurant Customers [source] [solution]
6. Movie Festival [source] [solution]
7. Sum of Two Values [source] [solution]
8. Maximum Subarray Sum [source] [solution]
9. Stick Lengths [source] [solution]
10. Missing Coin Sum [source] [solution]
11. Collecting Numbers [source] [solution]
12. Collecting Numbers II [source] [solution]
13. Playlist [source] [solution]
14. Towers [source] [solution]
15. Traffic Lights [source] [solution]
16. Josephus Problem I [source] [solution]
17. Josephus Problem II [source] [solution]
18. Nested Ranges Check [source] [solution]
19. Nested Ranges Count [source] [solution]
20. Room Allocation [source] [solution]
21. Factory Machines [source] [solution]
22. Tasks and Deadlines [source] [solution]
23. Reading Books [source] [solution]
24. Sum of Three Values [source] [solution]
25. Sum of Four Values [source] [solution]
26. Nearest Smaller Values [source] [solution]
27. Subarray Sums I [source] [solution]
28. Subarray Sums II [source] [solution]
29. Subarray Divisibility [source] [solution]
30. Subarray Distinct Values [source] [solution]
31. Array Division [source] [solution]
32. Sliding Median [source] [solution]
33. Sliding Cost [source] [solution]
34. Movie Festival II [source] [solution]

Problems solved: 53