2 ms·

All three problems descriptions use all three scripts. I think problem 2 uses a heavier font, for no clear reason. The English version is the same. Maybe the pr

All three problems descriptions use all three scripts. I think problem 2 uses a heavier font, for no clear reason. The English version is the same. Maybe the problem maker submitted it as bitmaps rather than Latex source.

glandium 10y ago
It appears that in the PDF, problem 2 is an image, while problem 1 is pure text.