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1
x  6
2
4
x  1
3
8
x  1
4
0
x  1
5
3
x  0
6
1
x  1
7
0
x  7
8
0
x  9
9
6
x  0
10
2
x  0
11
8
x  0
12
9
x  1
13
1
x  7
14
2
x  1
15
1
x  3
16
5
x  0
17
1
x  5
18
4
x  0

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