Project Euler #189: Tri-colouring a triangular grid

Hacker
Rank
Score
241
flag of Sri Lanka
50.00
242
flag of India
50.00
243
flag of India
50.00
245
flag of United States
50.00
246
flag of India
50.00
247
flag of India
50.00
248
flag of China
50.00
249
flag of India
50.00
250
flag of Bulgaria
50.00
251
flag of India
50.00
252
flag of India
50.00
253
flag of India
50.00
254
flag of India
50.00
256
flag of India
50.00
257
flag of Taiwan
50.00
258
flag of Azerbaijan
50.00
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