Function matrix_product 

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

✅ AC 659ms

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
random_00	AC	277 ± 3 ms
random_01	AC	264 ± 2 ms
random_02	AC	199 ± 1 ms
max_random_00	AC	649 ± 1 ms
max_random_01	AC	650 ± 3 ms
max_random_02	AC	659 ± 17 ms
small_00	AC	0 ± 0 ms
small_01	AC	0 ± 0 ms
small_02	AC	0 ± 0 ms
small_03	AC	0 ± 0 ms
small_04	AC	0 ± 0 ms
small_05	AC	0 ± 0 ms
small_06	AC	0 ± 0 ms
small_07	AC	0 ± 0 ms
small_08	AC	0 ± 0 ms
small_09	AC	0 ± 0 ms
signed_overflow_00	AC	0 ± 0 ms
unsigned_overflow_00	AC	0 ± 0 ms
unsigned_overflow_01	AC	0 ± 0 ms