Browse problems by topic and difficulty. 3,930 problems indexed.
| Title | Difficulty | ||
|---|---|---|---|
| Maximum Total Reward Using Operations II | Hard | Solve |
| Find Top Scoring Students | Medium | Solve |
| The Number of Ways to Make the Sum | Medium | Solve |
| Count Pairs That Form a Complete Day I | Easy | Solve |
| Count Pairs That Form a Complete Day II | Medium | Solve |
| Maximum Total Damage With Spell Casting | Medium | Solve |
| Peaks in Array | Hard | Solve |
| Find Top Scoring Students II | Hard | Solve |
| Minimum Moves to Get a Peaceful Board | Medium | Solve |
| Bulb Switcher | Medium | Solve |
| Find Minimum Operations to Make All Elements Divisible by Three | Easy | Solve |
| Minimum Operations to Make Binary Array Elements Equal to One I | Medium | Solve |
| Minimum Operations to Make Binary Array Elements Equal to One II | Medium | Solve |
| Count the Number of Inversions | Hard | Solve |
| Minimum Average of Smallest and Largest Elements | Easy | Solve |
| Find the Minimum Area to Cover All Ones I | Medium | Solve |
| Maximize Total Cost of Alternating Subarrays | Medium | Solve |
| Find the Minimum Area to Cover All Ones II | Hard | Solve |
| Find Cities in Each State | Easy | Solve |
| Count Triplets with Even XOR Set Bits I | Easy | Solve |
| Longest Valid Parentheses | Hard | Solve |
| Generalized Abbreviation | Medium | Solve |
| Maximum Height of a Triangle | Easy | Solve |
| Find the Maximum Length of Valid Subsequence I | Medium | Solve |
| Find the Maximum Length of Valid Subsequence II | Medium | Solve |