While a lot of us, when he begins to start competitive programming he found difficult to found problems on some topics in the beginning to practice of it, and same thing for a lot of ICPC Communites that they have started.
These are some topic not advanced and videos, problems and articles on them.
Prefix Sum & Frequency Array
STLS
Problems
Videos
William Fiset (PQ)
Adel Nassim (PQ)
Apna College (Multiset)
Adel Nassim (Dequeue)
Adel Nassim (Stack)
Adel Nassim (Queue)
Number Theory
Modular Arthmetics
Big integer mod m
Divisible rules and tests
Pow, gcd, lcm
Primes
Seive
Factorization & Divisors
Math
Videos
Binary Search
2 Pointers
Recursion
Backtracking
Bits
Graph
Dynammic Programming
Problems
- Lightoj Problems
- New Year and the Permutation Concatenation
- Multiply
- Stars Drawing(Easy Version)
- Consecutive Subsequence
- substring
- permute Digits
- Mike and GCD Problem
- Mahmud and message
- Travel Card
- Coloring Trees
- Robbers' Watch
- Alyona And the tree
- Geometric Progression
- Kyoya and balls
- soldier and number game
- Animals
- Flag
- Pavel and Triangles
Videos
- DP tutorial #1 by Errichto
- DP tutorial #2 by Errichto
- DP tutorial #3 by Errichto
- Leetcode DP problems by Errichto
- Algorithms Series | Session 3 | Dynamic Programming (Arabic)
- Dynamic programming I (Arabic)
- DP playlist(Arabic)
- DP playlist2(Arabic)
- Atcoder DP contest solutions by Errichto
- DP playlist(English)
- DP playlist (created by gkcs, English)
- DP playlist2(English)
- DP playlist3(Englush)
- Dp playlist4(English)
- DP playlist5(English)
- DP playlist6(English)
- DP playlist7(English)
- DP MIT open course
- Atcoder DP contest stream
- vplanet DP tutorials
- Algorithms Live
Segment Tree
Classic