Project Euler #237: Tours on a 4 x n playing board

Hacker
Rank
Score
21
flag of South Korea
57.50
22
flag of South Korea
57.50
23
flag of Netherlands
37.50
24
flag of China
37.50
25
flag of Korea, Republic of
37.50
26
flag of South Korea
37.50
30
flag of South Korea
37.50
31
flag of South Korea
37.50
32
flag of South Korea
37.50
33
flag of South Korea
37.50
34
flag of United States
37.50
35
flag of Korea, Republic of
36.25
36
flag of China
31.25
37
flag of India
27.50
38
flag of United States
18.75
39
flag of Korea, Republic of
12.50
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