Set .difference() Operation

Hacker
Rank
Score
179213
flag of Egypt
00.00
179213
flag of India
00.00
179213
flag of Philippines
00.00
179213
flag of Bolivia\r\nBolivia, Plurinational state of
00.00
179213
flag of Egypt
00.00
179213
flag of Saudi Arabia
00.00
179213
flag of India
00.00
179213
flag of India
00.00
179213
flag of India
00.00
179213
flag of India
00.00
179213
flag of Egypt
00.00
179213
flag of Armenia
00.00
179213
flag of Turkey
00.00
179213
flag of null
00.00
179213
flag of India
00.00
179213
flag of France
00.00
179213
flag of India
00.00
179213
flag of Singapore
00.00
179213
flag of Bangladesh
00.00
179213
flag of India
00.00
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