so_luong
1
2
2
2
3
5
2
2
20
1
26
1
1
1
1
5
13
1
5
3
9
1
3
1
1
1
7
3
2
2
4
1
3
1
1
2
1
2
1
1
10
2
5
1
1
1
3
1
11
2
4
2
2
1
29
4
16
1
16
1
0
1
1
0
1
1
1
4
3
0
2
29
2
9
3
24
1
3
5
1
1
7
1
3
4
6
13
1
1