Project Euler #92: Square digit chains

Hacker
Rank
Score
1521
flag of India
25.00
1523
flag of Spain
25.00
1524
flag of Sri Lanka
25.00
1526
flag of India
25.00
1527
flag of Czechia
25.00
1528
flag of Sri Lanka
25.00
1530
flag of India
25.00
1531
flag of Croatia
25.00
1532
flag of United States
25.00
1533
flag of Singapore
25.00
1534
flag of Australia
25.00
1535
flag of India
25.00
1536
flag of India
25.00
1537
flag of United Kingdom
25.00
1538
flag of United States
25.00
1539
flag of Greece
25.00
1540
flag of Denmark
25.00
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