Ruby Hash - Addition, Deletion, Selection

Hacker
Rank
Score
20682
flag of United States
00.00
20682
flag of Switzerland
00.00
20682
flag of Canada
00.00
20682
flag of Japan
00.00
20682
flag of United Kingdom
00.00
20682
flag of Russian Federation
00.00
20682
flag of United States
00.00
20682
flag of India
00.00
20682
flag of India
00.00
20682
flag of Ethiopia
00.00
20682
flag of United States
00.00
20682
flag of United States
00.00
20682
flag of Germany
00.00
20682
flag of Mexico
00.00
20682
flag of United States
00.00
20682
flag of Brazil
00.00
20682
flag of United States
00.00
20682
flag of United Kingdom
00.00
20682
flag of Mexico
00.00
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