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amberriver
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Ruoshui Song
amberriver
Specialist
United Kingdom
United Kingdom
Joined Apr 9, 2026
Achievements (52)
Hello WorldEasy StartTough NutHardmodeHalfway ThereSnake TamerWeekend ParticipantBlitz ParticipantBreaking ZeroRatedOn the Rise
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amberriver earned achievement On the Rise3 days ago
amberriver earned achievement Rated3 days ago
amberriver earned achievement Breaking Zero4 days ago
amberriver has completed the contest Blitz Round #18 and scored 450 points4 months ago
amberriver solved problem Nasser's Prime Slices (#12432) on 4 attempt4 months ago
amberriver solved problem Rufo's massive (#12430) on first attempt4 months ago
amberriver solved problem Area (#12429) on first attempt4 months ago
amberriver has joined contest Blitz Round #184 months ago
amberriver solved problem Competitors’ quantity of the Olympiad (#43) on first attempt4 months ago
amberriver solved problem Degree of symmetry (#19) on first attempt4 months ago
amberriver solved problem The Ticket Chase (#14) on first attempt4 months ago
amberriver has completed the contest Weekend Practice #22 and scored 520 points4 months ago
amberriver solved problem Exam for the Night's Watch (#12424) on 2 attempt4 months ago
amberriver solved problem Coding Errors (#12423) on first attempt4 months ago
amberriver solved problem Bread Sorting (#6828) on first attempt4 months ago
amberriver has joined contest Weekend Practice #21 4 months ago
amberriver has joined contest Weekend Practice #224 months ago
amberriver solved problem Sequence (#1083) on first attempt4 months ago
amberriver solved problem Sum of squares Cnk (#11271) on first attempt4 months ago
amberriver solved problem Perfect square (#8877) on first attempt4 months ago
amberriver solved problem Sum and amount (#8684) on first attempt4 months ago
amberriver has joined contest Educational Round #104 months ago
amberriver has joined contest Weekend Practice #204 months ago
amberriver has joined contest Training team contest for schoolchildren4 months ago
amberriver solved problem Digits (#2) on first attempt4 months ago