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happy_rubin_702
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Михайло Михайлович Щерецький
happy_rubin_702
Joined Apr 7, 2026
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3
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3
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happy_rubin_702
solved problem
Sum of squares Cnk (#11271)
on first attempt
1 month ago
happy_rubin_702
solved problem
Perfect square (#8877)
on first attempt
1 month ago
happy_rubin_702
solved problem
Sum and amount (#8684)
on first attempt
1 month ago
happy_rubin_702
has joined contest
Educational Round #10
1 month ago
