Trees: Is This a Binary Search Tree?

Hacker
Rank
Score
99520
flag of United States
17.538
99520
flag of Hungary
17.538
99520
flag of Romania
17.538
99520
flag of India
17.538
99520
flag of United States
17.538
99520
flag of Italy
17.538
99520
flag of United States
17.538
99520
flag of United Kingdom
17.538
99520
flag of India
17.538
99520
flag of India
17.538
99520
flag of United States
17.538
99520
flag of Georgia
17.538
99520
flag of India
17.538
99520
flag of United States
17.538
99520
flag of India
17.538
99520
flag of United States
17.538
99520
flag of Pakistan
17.538
99520
flag of United States
17.538
99520
flag of United States
17.538
99520
flag of United Kingdom
17.538
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