#combinatorics

Fill a weekly work schedule to an exact hour total
CodingMediumSnowflake
▲ 01 solution
Pascal triangle digit encryption
CodingEasyAmazon
▲ 01 solution
Count distinct passwords from one substring reversal
CodingEasyAmazon
▲ 01 solution
Count colorings of a row of houses with fixed end colors
CodingHardGoogle
▲ 01 solution
Uniformly random spanning tree over node groups
CodingHardDatabricks
▲ 01 solution