Project Euler #14: Longest Collatz sequence

Hacker
Rank
Score
681
flag of South Korea
100.00
682
flag of India
100.00
684
flag of United States
100.00
685
flag of India
100.00
686
flag of Hong Kong
100.00
687
flag of India
100.00
688
flag of Poland
100.00
690
flag of United States
100.00
691
flag of Russia
100.00
692
flag of Austria
100.00
693
flag of Bangladesh
100.00
694
flag of India
100.00
695
flag of United States
100.00
696
flag of India
100.00
697
flag of United States
100.00
698
flag of India
100.00
699
flag of Moldova, Republic of
100.00
700
flag of United States
100.00
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