8
1
0
1
1
s
8
s
8
s
1
9
9
1
8
s
8
s
s
1
9
8
0
s
9
1
0
0
0
1
9
9
9
9
1
8
8
s
0
8
8
1
s
s
1
0
9
8
9
0
8
0
0
9
s
1
s
0
9
1
1
9
9
8
1
s
0
9
1
s
1
0
1
s
8
s
0
8
8
1
8
s
9
9
9
0
0
9
s
9
s
0
0
8
1
0
0
8
8
8
s