2
thong
4
2
1
0
1
2
2
1
0
3
2
0
3
1
1
2
2
2
1
1
0
2
0
1
2
1
1
1
3
1
1
2
1
1
0
2
1
0
1
1
2
3
1
1
2
3
2
2
1
