DE-BUNDESWETTBEWERB 2011 Problem 1
- Round 1
Ten bowls are in a circle. They will go clockwise - starting somewhere filled with or marbles. You can have two choices in every move . Add a marble to neighboring shells or from two neighboring shells - if both of them are not empty - remove one marble each. Can you achieve that after finally many moves in each bowl exactly marbles lying?
Dataset text AI-MO AoPS. Quoted with source.
Official text: Bundeswettbewerb Mathematik 2011 official paper, page 1.
Solutions
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