#537 Counting the Number of Image Fill Operations

Companies:

T-Bank

Themes:

AlgorithmsGraphsPractice

An image is given where every pixel is colored with a color represented by a natural number.

Count how many fill operations, like in Paint, are required to recolor the entire image with a new color.

Example:

[1 1 1 2 1],
[1 2 1 2 1],
[1 1 1 3 1]
Answer: 5

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