C practice · exam sprint
ContestHub
140 original C problems across 20 sets. Open a problem, write code, hit Submit — no account, no setup.
Problem sets
Each set ramps Very Easy → Extreme (Q1–Q7).
0/140 solved locally
SET 010/7
I/O & Arithmetic Basics
SET 020/7
Conditionals & Strings Basics
SET 030/7
Arrays: Frequency, Min/Max, Search
SET 040/7
Bitwise Operations & Number Properties
SET 050/7
Sorting Fundamentals
SET 060/7
Basic Geometry
SET 070/7
Prefix Sums & Range Queries
SET 080/7
Greedy Algorithms — Introduction
SET 090/7
Binary Search — On Arrays and On the Answer
SET 100/7
Number Theory: GCD, LCM, Primes, Divisors
SET 110/7
Strings — Intermediate
SET 120/7
Graphs — BFS/DFS Introduction
SET 130/7
Dynamic Programming — Introduction
SET 140/7
Combinatorics & Modular Math
SET 150/7
Advanced Greedy + Prefix Sums
SET 160/7
Advanced Graphs — Implicit Graphs & Multi-source
SET 170/7
Advanced Number Theory
SET 180/7
Advanced Dynamic Programming
SET 190/7
Mixed Practice Contest — Round A
SET 200/7