Thu, 12 Oct 2017 19:52:15 +0800
merge
1 0 10
2 1 20
3 2 30
4 3 40
5 10
6 20
7 30
8 40
9 a 100
10 b 200
11 c 300
12 apple
13 bear
14 car
15 0 apple
16 1 bear
17 2 car
18 apple
19 bear
20 car
21 0 apple
22 1 bear
23 2 car
24 apple
25 bear
26 car
27 This is each