Explanation of rule 2, which confused me for a long time.


  • 15
    O

    I was very confused by the rule 2 before I read the solutions. Then I realized that the rule 2 means:
    "For all rows that have a black pixel at column C, they should be exactly the same as the row R in terms of looking"

    So in the example, row 1 looks exactly the same as the row 0, but row 3 looks not the same as row 0.

    I got confused by thinking row 1 and row 0 being the same means that the number of black pixels they have are the same or all other possibilities. Maybe that's because English is not my native language.


  • 4
    S

    Thanks OP. Leetcode admins, can we make sure problem statements are clear? Vague use of pronouns etc can cause a lot of confusion in problem statements


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