<span style="color:red">*</span> means important problem

Solve all stared problem should give you the ability to solve similar ones

## Greedy Algorithms
- [ ] [CSES - Movie Festival](https://cses.fi/problemset/task/1629)<span style="color:red">*</span>
- [ ] [CSES - Stick Division](https://cses.fi/problemset/task/1161)<span style="color:red">*</span>
- [ ] [Codeforces 1526C2 - Potions (Hard Version)](https://codeforces.com/problemset/problem/1526/C2)<span style="color:red">*</span>
- [ ] [CSES - Tasks and Deadlines](https://cses.fi/problemset/task/1630/)
- [ ] [CSES - Room Allocation](https://cses.fi/problemset/task/1164/)
- [ ] [CSES - Reading Books](https://cses.fi/problemset/task/1631)
- [ ] [UMD CP Club Practice Contest 2 - Arrangment](https://codeforces.com/group/Jch2iQtHGh/contest/439068/problem/D)<span style="color:red">*</span>
- [ ] [Codeforces 632C - The Smallest String Concatenation](https://codeforces.com/problemset/problem/632/C)<span style="color:red">*</span>
- [ ] [AtCoder Beginner Contest 268 F - Best Concatenation](https://atcoder.jp/contests/abc268/tasks/abc268_f)
- [ ] [Codeforces 1539D - PriceFixed](https://codeforces.com/problemset/problem/1539/D)
- [ ] [Codeforces 1175D - Array Splitting](https://codeforces.com/problemset/problem/1175/D)
- [ ] [Codeforces 1203F1 - Complete the Projects (easy version)](https://codeforces.com/problemset/problem/1203/F1)

## Modular Arithmetic
- [ ] [CSES - Exponentiation](https://cses.fi/problemset/task/1095)<span style="color:red">*</span>
- [ ] [CSES - Exponentiation II](https://cses.fi/problemset/task/1712)<span style="color:red">*</span>

## Prefix Sum / Difference Array
- [ ] [CSES - Static Range Sum Queries](https://cses.fi/problemset/task/1646)<span style="color:red">*</span>
- [ ] [HackerRank - Array Manipulation](https://www.hackerrank.com/challenges/crush/problem)<span style="color:red">*</span>
- [ ] [CSES - Forest Queries](https://cses.fi/problemset/task/1652)<span style="color:red">*</span>
- [ ] [USACO - Paint the Barns](http://www.usaco.org/index.php?page=viewproblem2&cpid=919)<span style="color:red">*</span> (2D Difference Array)
- [ ] [AtCoder Beginner Contest 183D - Water Heater](https://atcoder.jp/contests/abc183/tasks/abc183_d)
- [ ] [Codeforces 1700C - Helping the Nature](https://codeforces.com/problemset/problem/1700/C)
- [ ] [AtCoder Beginner Contest 268E - Chinese Restaurant](https://atcoder.jp/contests/abc268/tasks/abc268_e)

## Monotonic Stack

- [ ] [CSES - Nearest Smaller Value](https://cses.fi/problemset/task/1645)<span style="color:red">*</span>
- [ ] [Zerojudge a146 - Sliding Maximum](https://zerojudge.tw/ShowProblem?problemid=a146)<span style="color:red">*</span>
- [ ] [CSES - Advertisement](https://cses.fi/problemset/task/1142)<span style="color:red">*</span>
- [ ] [CSES - Maximum Building I](https://cses.fi/problemset/task/1147)<span style="color:red">*</span>
- [ ] [Codeforces 1313C2 - Skyscrapers (hard version)](https://codeforces.com/contest/1313/problem/C2)