Project Euler #136: Singleton difference

Hacker
Rank
Score
41
flag of United States
100.00
42
flag of China
100.00
43
flag of Canada
100.00
44
flag of India
100.00
45
flag of United States
100.00
46
flag of Poland
100.00
47
flag of China
100.00
49
flag of Czech Republic
97.50
50
flag of Germany
85.00
51
flag of Belgium
50.00
53
flag of India
50.00
54
flag of United States
50.00
55
flag of India
50.00
56
flag of Argentina
50.00
57
flag of Netherlands
50.00
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