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