Project Euler #189: Tri-colouring a triangular grid

Hacker
Rank
Score
429
flag of United States
00.00
429
flag of India
00.00
429
flag of United States
00.00
429
flag of United States
00.00
429
flag of India
00.00
429
flag of India
00.00
429
flag of Japan
00.00
429
flag of India
00.00
429
flag of Israel
00.00
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