IOIO-2025: Task-13 (Hat 3D)
Published 04 dec 2025 at 01:05
#1
Hat
Designed by Andrey Ermakov (Russia)
inspired by Joel Cooper
Difficulty: *********_
Paper size: 35 cm
Paper: 40-50 g/m²
Round: 2
Published 11 jan 2026 at 15:45
#2
my second favourite model of this olympiad!
It took me some time to find out how to collapse, but at some point everythig seemed to fall in place on it´s own.
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