[ 0:53:04.64] c:\test>845979 1000
Generate fake paragraphs
Sort
Count reversed hash
Solving
999/1000
[0 2 3 4 7 8 9 10 11 12 13 1
[4 6 7 8 10 11 12 13 14 15 1
[0 1 3 4 6 7 8 10 11 12 13 1
[0 5 6 7 8 9 10 12 14 15 18
11s

[ 1:11:24.79] c:\test>845979 2000
Generate fake paragraphs
Sort
Count reversed hash
Solving
1999/2000
[0 1 4 5 6 7 10 12 13 14 15 16 20
[1 3 5 6 7 9 11 13 14 16 17 18 19
[1 3 4 5 6 7 8 9 10 11 13 14 15 1
[1 2 6 7 8 9 10 12 14 19 20 21 22
50s

[ 1:12:25.86] c:\test>845979 4000
Generate fake paragraphs
Sort
Count reversed hash
Solving
3999/4000
[0 1 5 9 10 11 13 14 15 16 18 19 2
[0 1 4 8 9 11 13 14 15 16 18 19 20
[1 4 5 7 8 9 10 11 12 15 16 17 18
[2 3 4 5 6 7 8 9 11 13 17 18 19 21
220s