Set .discard(), .remove() & .pop()

Hacker
Rank
Score
161408
flag of India
00.00
161408
flag of India
00.00
161408
flag of Australia
00.00
161408
flag of India
00.00
161408
flag of Canada
00.00
161408
flag of Dominican Republic
00.00
161408
flag of India
00.00
161408
flag of India
00.00
161408
flag of India
00.00
161408
flag of India
00.00
161408
flag of Russian Federation
00.00
161408
flag of Egypt
00.00
161408
flag of India
00.00
161408
flag of India
00.00
161408
flag of India
00.00
161408
flag of India
00.00
161408
flag of United States
00.00
161408
flag of Singapore
00.00
161408
flag of Australia
00.00
161408
flag of India
00.00
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