Leetcode Problem 2579. Count Total Number of Colored Cells

2579. Count Total Number of Colored Cells

Leetcode Solutions

Sum of Arithmetic Sequences

  1. Initialize total to 1, which represents the first cell colored in the first minute.
  2. Loop from 1 to n-1 (inclusive) to simulate each minute after the first.
  3. In each iteration, calculate the number of new cells colored by multiplying the current minute by 4.
  4. Subtract 4 from this number to account for the corners being counted twice.
  5. Add the result to total.
  6. After the loop, return total as the final result.
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Mathematical Formula for Sum of Squares

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