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 326 / 377 1000
Fork and knife 276 / 282 1100
Binomial coefficient 2 224 / 249 1100
Equation 234 / 241 1300
Array rearrangement 221 / 230 1300
Value of subsequences 190 / 199 1400
Inequation 179 / 183 1400
Growing mushrooms 175 / 177 1500
Binary matrix 93 / 110 1600
Broken board 54 / 65 1600
Triangles counting 44 / 79 1800
Minecraft graph 16 / 19 1800
Restricted path 31 / 36 1900
Heavenly Peach Garden 12 / 16 2000