петак, 4. мај 2012.

How to Solve a Magnets Puzzle

In a magnets puzzle, you are given a grid of dominoes and the number of positive and negative poles in each row and column. The goal is to determine which dominoes are magnetized and which are neutral. For the magnetized dominoes, identify which pole is positive and which is negative. Like charged poles repel and are not allowed to touch directly, but may touch diagonally.

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