2005 USAMO Problems/Problem 6
Problem
For a positive integer, let
be the sum of the digits of
. For
, let
be the minimal
for which there exists a set
of
positive integers such that
for any nonempty subset
. Prove that there are constants
with
Solution
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See Also
2005 USAMO (Problems • Resources) | ||
Preceded by Problem 5 |
Followed by Last Question | |
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All USAMO Problems and Solutions |