Лошак Сергій
Betelgeyze
Ukraine
Joined Sep 10, 2017
Problems613
Submissions921
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Betelgeyze solved problem Queen of angle 2 (#2657) on 2 attempt13 days ago
Betelgeyze solved problem Queen of angle (#2656) on 3 attempt13 days ago
Betelgeyze solved problem The area of a polygon (#851) on first attempt9 months ago