1
21
20
20
2
2
1
1
3
2
1
1
4
1
0
0
9
2
1
1
12
2
1
1
13
2
1
1
14
2
1
1
15
2
1
1
16
2
1
1
17
1
0
0
18
2
1
1
19
2
1
1
20
2
1
1
21
2
1
1
22
2
1
1
