Function vertex_add_subtree_sum

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

✅ AC 111ms

problem here

Detail

Case Name	Status	Exec Time
example_00	AC	0 ± 0 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
random_00	AC	73 ± 2 ms
random_01	AC	92 ± 12 ms
random_02	AC	31 ± 1 ms
random_03	AC	45 ± 1 ms
random_04	AC	34 ± 2 ms
max_random_00	AC	111 ± 4 ms
max_random_01	AC	100 ± 5 ms
max_random_02	AC	94 ± 6 ms
line_00	AC	102 ± 4 ms
line_01	AC	97 ± 2 ms