RU-ALLRUSSIAN 1991 Problem 11
- Answer
The numbers 1, 2, 3, ..., n are written on a blackboard (where ). A move is to replace two numbers by their sum and non- negative difference. A series of moves makes all the numbers equal k. Find all possible k.
Answer all powers of
Dataset text NuminaMath olympiads. Quoted with source.
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2^m \geq n
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