Function number_of_substrings 

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

✅ AC 444ms

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	109 ± 1 ms
random_01	AC	130 ± 2 ms
random_02	AC	10 ± 0 ms
random_03	AC	122 ± 1 ms
random_04	AC	76 ± 1 ms
max_random_00	AC	152 ± 1 ms
max_random_01	AC	145 ± 2 ms
max_random_02	AC	143 ± 1 ms
max_random_03	AC	143 ± 1 ms
max_random_04	AC	143 ± 1 ms
all_same_00	AC	89 ± 0 ms
all_same_01	AC	89 ± 0 ms
all_same_02	AC	89 ± 0 ms
all_same_03	AC	89 ± 0 ms
all_same_04	AC	88 ± 0 ms
fib_str_00	AC	444 ± 11 ms
fib_str_01	AC	300 ± 1 ms
fib_str_02	AC	281 ± 2 ms
fib_str_03	AC	253 ± 4 ms
fib_str_04	AC	436 ± 1 ms