2
cum
1
3
1
4
1
0
1
1
1
2
3
1
7
4
1
0
4
3
1
3
4
3
3
1
1
2
1
2
2
8
2
6
2
4
3
3
1
1
3
2
2
3
8
1
0
3
3
2
7
