Function number_of_substrings 

pub fn number_of_substrings(reader: impl Read, writer: impl Write)

✅ AC 51ms

problem here

Detail

Case Name	Status	Exec Time
example_00	AC	0 ± 0 ms
example_01	AC	0 ± 0 ms
example_02	AC	0 ± 0 ms
example_03	AC	0 ± 0 ms
random_00	AC	41 ± 5 ms
random_01	AC	49 ± 2 ms
random_02	AC	4 ± 0 ms
random_03	AC	41 ± 0 ms
random_04	AC	26 ± 0 ms
max_random_00	AC	50 ± 2 ms
max_random_01	AC	50 ± 2 ms
max_random_02	AC	51 ± 1 ms
max_random_03	AC	50 ± 1 ms
max_random_04	AC	49 ± 0 ms
all_same_00	AC	7 ± 1 ms
all_same_01	AC	7 ± 0 ms
all_same_02	AC	7 ± 1 ms
all_same_03	AC	7 ± 0 ms
all_same_04	AC	7 ± 0 ms
fib_str_00	AC	26 ± 2 ms
fib_str_01	AC	18 ± 0 ms
fib_str_02	AC	19 ± 0 ms
fib_str_03	AC	14 ± 0 ms
fib_str_04	AC	27 ± 1 ms