Practice Count Total Number of Colored Cells
Read the task, work through the examples, and check your approach against the constraints. Use the original LeetCode task for coding and submissions.
Problem Statement
On an infinite grid, color one cell in minute 1. Each later minute, simultaneously color every uncolored cell sharing an edge with an already colored cell. Return the total colored cells after n minutes.
Source: Count Total Number of Colored Cells on LeetCode. Use the original task for its coding environment and submissions.
Examples
# Example 1
Input
n = 1
Output
1
# Example 2
Input
n = 2
Output
5
Constraints
1 <= n <= 10^5
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