Concatenate an array with itself

Hacker
Rank
Score
18701
flag of United States
00.333
18701
flag of India
00.333
18701
flag of Turkey
00.333
18701
flag of India
00.333
18701
flag of Romania
00.333
18766
flag of United States
00.00
18766
flag of Italy
00.00
18766
flag of United States
00.00
18766
flag of India
00.00
18766
flag of Hong Kong
00.00
18766
flag of Poland
00.00
18766
flag of Israel
00.00
18766
flag of Bangladesh
00.00
18766
flag of Romania
00.00
18766
flag of Canada
00.00
18766
flag of Macao
00.00
18766
flag of India
00.00
18766
flag of Israel
00.00
18766
flag of Hungary
00.00
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