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 342 / 394 1000
Fork and knife 286 / 292 1100
Binomial coefficient 2 229 / 256 1100
Equation 244 / 251 1300
Array rearrangement 231 / 239 1300
Value of subsequences 198 / 208 1400
Inequation 188 / 193 1400
Growing mushrooms 186 / 188 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