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

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