Set .difference() Operation

Hacker
Rank
Score
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of South Africa
00.00
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of United States
00.00
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of India
00.00

[deleted]

194938
flag of null
00.00
194938
flag of United States
00.00
194938
flag of India
00.00
194938
flag of India
00.00
194938
flag of India
00.00
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