1
0
1
0
2
2
0
1
0
2
0
3
3
0
1
0
2
4
0
1
0
2
0
3
0
4
0
5
5
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
10
0
11
0
12
0
13
6
0
1
0
2
7
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
10
0
11
0
12
0
13
0
14
0
15
0
16
0
17
0
18
8
0
1
0
2
9
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
10
0
11
0
12
0
13
0
14
0
15
0
16
0
17
0
18
0
19
0
20
0
21
0
22
10
0
1
0
2
11
0
1
0
2
0
3
12
0
1
0
2
0
3
0
4
13
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
10
0
11
0
12
0
13
0
14
0
15
0
16
0
17
0
18
0
19
14
0
1
0
2