Project Euler #56: Powerful digit sum

Hacker
Rank
Score
4162
flag of Sri Lanka
25.00
4164
flag of India
25.00
4165
flag of Sri Lanka
25.00
4167
flag of India
25.00
4169
flag of India
25.00
4171
flag of India
25.00
4172
flag of Thailand
25.00
4173
flag of India
25.00
4175
flag of India
25.00
4176
flag of United States
25.00
4177
flag of India
25.00

[deleted]

4178
flag of null
25.00
4179
flag of India
25.00
4180
flag of India
25.00
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