20
15 7 -2 -11 -18 -20 -18 -11 -3 7 15 23 32 41 48 50 48 41 32 23
9 1 -8 -17 -25 -27 -26 -18 -9 0 7 14 24 33 40 43 41 34 25 16
5 -3 -12 -22 -30 -34 -32 -26 -18 -9 -2 6 15 24 32 35 33 28 20 12
5 -2 -12 -23 -33 -35 -35 -34 -26 -18 -11 -3 6 15 23 27 27 23 17 10
9 1 -9 -21 -32 -35 -35 -35 -33 -25 -18 -10 -2 7 15 20 21 18 16 12
15 7 -4 -17 -29 -35 -35 -35 -36 -28 -20 -13 -6 3 10 15 17 17 16 15
21 13 2 -11 -24 -34 -35 -35 -32 -25 -18 -11 -3 3 9 13 15 16 17 18
25 17 5 -7 -19 -28 -32 -31 -25 -18 -11 -4 2 7 11 13 14 15 17 20
25 17 7 -5 -16 -24 -26 -23 -18 -9 -2 5 10 13 14 14 13 13 15 19
21 14 4 -7 -16 -21 -21 -16 -8 0 7 13 18 20 18 15 12 10 11 15
15 7 -2 -11 -18 -20 -18 -11 -2 7 15 21 25 25 21 15 9 5 5 9
7 0 -8 -16 -20 -20 -15 -6 4 14 21 28 30 29 23 14 6 0 -2 1
-2 -8 -16 -20 -22 -20 -12 -2 9 18 25 30 32 28 20 10 -1 -8 -10 -8
-12 -16 -20 -22 -22 -17 -9 1 11 19 25 29 28 23 13 0 -10 -17 -20 -17
-18 -20 -22 -21 -18 -11 -3 5 13 18 21 23 20 13 2 -10 -20 -26 -28 -24
-20 -20 -18 -15 -9 -3 4 9 13 15 15 14 10 1 -10 -20 -28 -32 -32 -27
-18 -15 -10 -4 3 8 13 14 14 12 9 6 -1 -10 -20 -28 -33 -34 -31 -25
-11 -6 1 9 16 21 22 20 16 9 5 0 -8 -17 -26 -32 -34 -31 -25 -18
-2 5 13 22 29 33 32 27 19 12 5 -2 -10 -20 -28 -32 -31 -25 -17 -9
7 15 24 33 40 43 40 34 25 16 9 1 -8 -17 -24 -27 -25 -18 -9 0
