ECNU Online Judge

#	标题	奖励	解出人数
3632	number theory Establishment Of Primes	8.8	x 5
3631	dfs trees Delivery Service	4.1	x 54
3630	construction Bad Queen	3.1	x 146
3629	sweep line Channel On Live	3.7	x 121
3628	math A Simple Convolution	0.8	x 387

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