Div2 Round 1288 C

Правка en1, от konahamaru, 2020-03-18 18:34:45

Can Someone explain how to approach and solve this type of questions Div2 Round 1288 C and from where I can practice questions of combinations ?

Теги combinatorics

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en1 Английский konahamaru 2020-03-18 18:34:45 161 Initial revision (published)