Trees: Is This a Binary Search Tree?

Hacker
Rank
Score
92230
flag of United States
27.693
92230
flag of Nigeria
27.693
92230
flag of United Kingdom
27.693
92230
flag of Spain
27.693
92230
flag of Russian Federation
27.693
92230
flag of Mexico
27.693
92647
flag of India
27.462
92647
flag of United States
27.462
92647
flag of United Kingdom
27.462
92647
flag of United States
27.462
92647
flag of India
27.462
92647
flag of France
27.462
92647
flag of United States
27.462
92647
flag of United States
27.462
92647
flag of United States
27.462
92647
flag of United States
27.462
92647
flag of United States
27.462
92647
flag of India
27.462
92647
flag of Thailand
27.462
92647
flag of India
27.462
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