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

Hacker
Rank
Score
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of Spain
00.00
173256
flag of Argentina
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of United States
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of Brazil
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of India
00.00
173256
flag of Egypt
00.00
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