Problem

[109]

S is the set \(\left\{1,\;2,\;3,\;\dots,\;1000000\right\}\). Show that for any subset \(A\) of \(S\) with \(101\) elements we can find \(100\) distinct elements \(x_i\) of \(S\), such that the sets \(\left\{a+x_i\vert a\in A\right\}\) are all pairwise disjoint.

Solution

Attributes Олімпіадна
Source International Mathematical Olympiad
Year 2003
Number 1
Difficulty 10.0
Themes