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

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