Painting Wall Painting Wall
Moderate
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Nicola has built a simple robot for painting of the wall. The wall is marked at each meter and the robot has a list of painting operations. Each operation describes which part of wall it needs to paint as a range from place to place, inclusively. For example: the operation [1, 5] means to paint the sections from 1 to 5 meters including sections 1 and 5. Operations are executed in the order they are placed in the list of operations. If the range of various operations are overlapped, then they must be counted once.

Stephan has prepared a list of operations, but we need to...

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