2
cum
0
0
1
3
1
6
1
3
2
3
2
1
1
2
1
0
3
2
0
1
1
2
1
1
1
1
2
1
1
1
2
1
2
2
0
3
4
2
1
1
2
1
0
1
3
1
4
4
2
