$**$Please fill in the missing value

For the following two multiplication examples, please find out for each example whether the numbers are provided in $1\text{'}$s or $2\text{'}$s complement, and fill in the missing values so that the multiplication operations represent a valid, no$-$overflow calculation in the corresponding representation system.

$1\text{'}$s or $2\text{'}$s$?$

$1\text{'}$s or $2\text{'}$s$?$