Solved by gennadykorotkevich

#	Title	# Solved	Avg. Tries
17468	N! mod P (3)	29	3.28
18168	Game with Polynomials 2	44	3.36
18661	The One Polynomial Man	9	1.89
31500	N진수 곱셈 (tiny)	42	3.88
31505	N진수 곱셈 (HUGE)	18	9.17

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