JMO 2016 Problem 4
There is a square grid. We divided this in rectangles along unit squares. How many ways that one of the rectangles doesn't have a edge on basic circumference. Note that we count as different ways that one way coincides with another way by rotating or reversing.
Dataset text AI-MO AoPS. Quoted with source.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.
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