You are given a design board with two input pins A and B and three

output pins R$,$ C$.$out and V$.$ Build from gates a $6-$bit signed$-$number

subtractor circuit, which subtracts B from A asserting the difference on

R and the carry$-$out on C$.$out. If subtraction causes a signed$-$number

overflow, your circuit must assert $1$ on V$,$ otherwise V should be low.