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

Hacker
Rank
Score
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of Singapore
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of Egypt
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of Singapore
00.00
178751
flag of France
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of India
00.00
178751
flag of India
00.00
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