How Many Substrings?

Hacker
Rank
Score
01
flag of India
100.00
01
flag of India
100.00
01
flag of India
100.00
01
flag of India
100.00
01
flag of Bangladesh
100.00
01
flag of India
100.00
01
flag of India
100.00

[deleted]

01
flag of null
100.00
01
flag of India
100.00

[deleted]

01
flag of null
100.00
01
flag of India
100.00
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