Trees: Is This a Binary Search Tree?

Hacker
Rank
Score
115003
flag of United States
00.00
115003
flag of Germany
00.00
115003
flag of France
00.00
115003
flag of India
00.00
115003
flag of India
00.00
115003
flag of United States
00.00
115003
flag of United States
00.00
115003
flag of India
00.00
115003
flag of United States
00.00
115003
flag of India
00.00
115003
flag of Brazil
00.00
115003
flag of Romania
00.00
115003
flag of India
00.00
115003
flag of Netherlands
00.00
115003
flag of United States
00.00
115003
flag of India
00.00

[deleted]

115003
flag of null
00.00
115003
flag of India
00.00
115003
flag of India
00.00
115003
flag of United States
00.00
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