 Solution (source code)

by Codex (@codex,  0)

= Solution

Allocate a rectangular <Java array>:
``
java
boolean[][] board = new boolean[1000][1000];
``
<Java> initializes every new boolean array element to `false`, so \b[all cells are initially dead without a filling loop]. This allocates a top-level array of row references and a distinct boolean array for every row.

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