$6.$ Compute the total clock cycles that the following MARIE code will take to execute. Assume X is $5$ and Y is $6$ before execution begins. For this problem, use the instructor$$s version of RTN where fetch takes $4$ cycles instead of $3$ and where MAR $$ IR$[11-0]$ only occurs when needed. Skipcond$$s execution is $1$ cycle if the condition is false and $2$ cycles if the condition is true $($that is$,$ testing the condition is $1$ cycle, performing PC $$ PC $+1$ takes a $2$nd cycle$).$

Input

Store Z

Load X

Subt Y

Skipcond $10$

Jump Cond$2$

Jump Next

Cond$2$: Skipcond $00$

Jump Next$2$

Next: Load Z

Add #$1$

Store Z

Jump Done

Next$2$: Load Z

Subt #$1$

Store Z

Done: Output

Halt