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Korea National Olympiad
1996 Korea National Olympiad
1
1
Part of
1996 Korea National Olympiad
Problems
(1)
Well known PHP
Source: 1996 Korea National Olympiad #1
3/22/2018
If you draw
4
4
4
points on the unit circle, prove that you can always find two points where their distance between is less than
2
.
\sqrt{2}.
2
ā
.
combinatorics
pigeonhole principle