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 341 / 393 1000
Fork and knife 286 / 292 1100
Binomial coefficient 2 229 / 256 1100
Equation 243 / 250 1300
Array rearrangement 230 / 238 1300
Value of subsequences 197 / 207 1400
Inequation 187 / 192 1400
Growing mushrooms 185 / 187 1500
Binary matrix 98 / 115 1600
Broken board 55 / 66 1600
Triangles counting 44 / 81 1800
Minecraft graph 18 / 21 1800
Restricted path 32 / 37 1900
Heavenly Peach Garden 12 / 16 2000