Updated April 2026

100% Free Absolute Beginner to Advanced No Signup

Competitive Programming: Zero to Hero

The Easiest CP Course Ever Made — ~8 min/lesson — From "What is Code?" to Contest Winner | by Teamz Lab

50Lessons
~10 minPer Lesson
$0Forever
19Topics
Start Lesson 1 — Free See Curriculum

What you'll learn

C++ Fundamentals
Input/Output
Conditionals
Loops
Arrays
Strings
Functions
Sorting Algorithms
Selection Sort
Insertion Sort
Merge Sort
Binary Search
Math for CP
Number Theory
Sieve of Eratosthenes
Greedy Algorithms

Full curriculum

50 lessons organized by topic. Click any lesson to jump straight in.

1. Welcome & Setup (3 lessons)

  1. 1What is Competitive Programming?
  2. 2Setting Up Your Coding Playground
  3. 3How Online Judges and Contests Work

2. C++ Basics (4 lessons)

  1. 4Variables — Your Code’s Memory Boxes
  2. 5Input and Output — Talking to Your Computer
  3. 6Math Operations — Your Code Calculator
  4. 7Data Types Deep Dive — Choosing the Right Box

3. Decisions & Logic (3 lessons)

  1. 8If-Else — Teaching Your Code to Make Decisions
  2. 9Else-If Chains — Multiple Choices
  3. 10Logical Operators — Combining Conditions

4. Loops & Patterns (3 lessons)

  1. 11While Loops — Repeat Until Done
  2. 12For Loops — The Counter Loop
  3. 13Nested Loops — Loops Inside Loops

5. Arrays & Lists (3 lessons)

  1. 14Arrays — A Row of Boxes
  2. 15Array Operations — Working with Your List
  3. 16Finding Min, Max, and Searching

6. Strings & Text (2 lessons)

  1. 17Characters and Strings
  2. 18String Problems in Contests

7. Functions (2 lessons)

  1. 19Functions — Your Helper Robots
  2. 20Problem Solving with Functions

8. Math & Number Theory (4 lessons)

  1. 21GCD and LCM — Number Best Friends
  2. 22Playing with Digits
  3. 23Powers and Modular Arithmetic
  4. 46Sieve of Eratosthenes — Finding All Primes Fast

9. Sorting & Searching (4 lessons)

  1. 24Bubble Sort — The Swapping Dance
  2. 25Binary Search — The Guessing Game
  3. 26Using sort() and Built-in Tools
  4. 49More Sorting — Selection, Insertion & Merge Sort

10. Problem Solving Patterns (3 lessons)

  1. 27Frequency Counting — Who Appears Most?
  2. 28Two Pointer Technique
  3. 29Prefix Sum — The Running Total

11. Greedy Algorithms (2 lessons)

  1. 30Greedy Algorithms — Always Pick the Best
  2. 31More Greedy Problems

12. Recursion (2 lessons)

  1. 32Recursion — The Magic of Self-Calling Functions
  2. 33More Recursion Adventures

13. Data Structures (2 lessons)

  1. 34Stack — The Pancake Pile
  2. 35Queue — The Lunch Line

14. Dynamic Programming (2 lessons)

  1. 41Dynamic Programming — Remember and Reuse
  2. 42More DP Adventures — Coins and Stairs

15. Graph Algorithms (2 lessons)

  1. 43Graphs — Connecting the Dots
  2. 44BFS and DFS — Exploring Graphs Step by Step

16. Bit Manipulation (1 lesson)

  1. 45Bit Manipulation — The Secret Language of Computers

17. Combinatorics (1 lesson)

  1. 47Combinatorics — Counting Without Listing

18. C++ STL Toolkit (1 lesson)

  1. 50C++ STL — Your Super Toolbox

19. Contest Mastery (6 lessons)

  1. 36Reading Contest Problems Like a Pro
  2. 37Solving Easy Contest Problems (A/B Problems)
  3. 38Debugging Like a Detective
  4. 39Time Complexity — Making Your Code Fast
  5. 40Your CP Journey — What's Next!
  6. 48Practice Makes Champion — Your CP Toolkit
Start the Course — Free

Frequently asked questions

Is this course really free?

Yes — 100% free. No signup, no credit card, no email required. All lessons, quizzes, and certificate of completion are free forever.

Do I need to install anything?

No. The entire course runs in your browser on phone, tablet, or laptop. No downloads, no accounts.

How long does the course take?

About 10 minutes per lesson. One lesson per day takes about 1-2 months total. Many learners finish in 2-3 weeks by doing multiple lessons per sitting.

Will I get a certificate?

Yes. After completing all lessons, generate a personalized certificate with your name and share it on LinkedIn. Not accredited, but signals commitment to recruiters.

Do I need prior experience?

No. Every course is designed for complete beginners. Each lesson starts with a plain-English analogy before any technical concepts.

How is this different from YouTube tutorials?

Three things: interactive — quizzes and hands-on challenges after every lesson; structured — a deliberate learning path, not random videos; gamified — XP, streaks, spaced repetition so knowledge actually sticks.