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

Hacker
Rank
Score
167971
flag of India
00.00
167971
flag of Canada
00.00
167971
flag of Turkey
00.00
167971
flag of Turkey
00.00
167971
flag of United States
00.00
167971
flag of United Kingdom
00.00
167971
flag of India
00.00
167971
flag of India
00.00
167971
flag of India
00.00
167971
flag of India
00.00
167971
flag of Egypt
00.00
167971
flag of India
00.00
167971
flag of India
00.00
167971
flag of India
00.00
167971
flag of India
00.00
167971
flag of Canada
00.00
167971
flag of Poland
00.00
167971
flag of United States
00.00
167971
flag of India
00.00
167971
flag of India
00.00
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