Project Euler #92: Square digit chains

Hacker
Rank
Score
1501
flag of United States
25.00
1502
flag of Taiwan
25.00
1503
flag of United States
25.00
1504
flag of Switzerland
25.00
1505
flag of Switzerland
25.00
1506
flag of Australia
25.00
1507
flag of United States
25.00
1510
flag of India
25.00
1511
flag of India
25.00
1512
flag of Germany
25.00
1513
flag of United States
25.00
1514
flag of Austria
25.00
1515
flag of France
25.00
1516
flag of Germany
25.00
1517
flag of Denmark
25.00
1518
flag of Denmark
25.00
1519
flag of India
25.00
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