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Input indicates number K. When input is 1, you need to check all numbers under 10^1. So there are 7 numbers match the defined criteria among [1, 2, ... 10]
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Project Euler #92: Square digit chains
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Input indicates number K. When input is 1, you need to check all numbers under 10^1. So there are 7 numbers match the defined criteria among [1, 2, ... 10]