0
cum
0
1
2
0
1
4
1
4
2
2
1
2
2
2
6
1
1
3
3
1
1
5
5
2
1
4
2
1
2
2
2
1
1
4
1
0
1
1
2
3
7
4
1
0
3
1
3
3
3
