Module Introduction to combinatorics

Introduction to combinatorics

**Frequency: 7/10** Combinatorics problems are quite common in Competitive Programming.

Resources

Tài liệu Tiếng Anh: - [CP Algorithms: Binomial Coefficients](https://cp-algorithms.com/combinatorics/binomial-coefficients.html) - [CP Algorithms: Stars and bars](https://cp-algorithms.com/combinatorics/stars_and_bars.html)

Problems

Binomial coefficient 348 / 401 1000
Fork and knife 294 / 300 1100
Binomial coefficient 2 236 / 264 1100
Equation 250 / 258 1300
Array rearrangement 238 / 245 1300
Value of subsequences 204 / 214 1400
Inequation 192 / 197 1400
Growing mushrooms 193 / 194 1500
Binary matrix 98 / 115 1600
Broken board 57 / 68 1600
Triangles counting 46 / 83 1800
Minecraft graph 18 / 21 1800
Restricted path 32 / 37 1900
Heavenly Peach Garden 12 / 16 2000