ECNU Online Judge

#	标题	奖励	解出人数
3392	data structure segment tree 线段树：区间覆盖	4.2	x 46
3391	data structure segment tree 线段树：区间增加	2.9	x 148
3390	data structure segment tree 线段树：点覆盖	3.4	x 63
3389	data structure segment tree 线段树：点增加	3.0	x 124
2918	data structure segment tree K-th Number	4.8	x 26
2458	segment tree Frequent values	3.0	x 132
1467	segment tree Mars Maps	5.6	x 14

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