Set .difference() Operation

Hacker
Rank
Score
01
flag of United States
10.00
01
flag of United States
10.00
01
flag of China
10.00
01
flag of Netherlands
10.00
01
flag of Republic of Korea
10.00
01
flag of Thailand
10.00
01
flag of Mexico
10.00
01
flag of United States
10.00
01
flag of United States
10.00
01
flag of United States
10.00
01
flag of Taiwan
10.00
01
flag of Poland
10.00
01
flag of United States
10.00
01
flag of Canada
10.00
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