Function assignment 

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

✅ AC 240ms

problem here

Detail

Case Name	Status	Exec Time
example_00	AC	0 ± 0 ms
random_00	AC	4 ± 0 ms
random_01	AC	5 ± 0 ms
random_02	AC	0 ± 0 ms
random_03	AC	5 ± 0 ms
random_04	AC	0 ± 0 ms
max_random_00	AC	48 ± 1 ms
max_random_01	AC	45 ± 0 ms
max_random_02	AC	47 ± 0 ms
max_random_03	AC	47 ± 1 ms
max_random_04	AC	48 ± 0 ms
hand_plus_00	AC	9 ± 0 ms
hand_minus_00	AC	10 ± 0 ms
multiplication_table_00	AC	240 ± 0 ms