Trees: Is This a Binary Search Tree?

Hacker
Rank
Score
115001
flag of India
00.00
115001
flag of India
00.00
115001
flag of United States
00.00
115001
flag of United States
00.00
115001
flag of India
00.00
115001
flag of United States
00.00
115001
flag of India
00.00
115001
flag of Brazil
00.00
115001
flag of Romania
00.00
115001
flag of India
00.00
115001
flag of Netherlands
00.00
115001
flag of United States
00.00
115001
flag of India
00.00

[deleted]

115001
flag of null
00.00
115001
flag of India
00.00
115001
flag of India
00.00
115001
flag of United States
00.00
115001
flag of France
00.00
115001
flag of United States
00.00
115001
flag of United States
00.00
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