🎴 Flashcard Mode

Consider the following program segment for a hypothetical CPU having three user registers R1,R2 and R3.

Let the clock cycles required for various operations be as follows:
ADD with both operands in register: 1 clock cycle
Instruction fetch and decode: 2 clock cycles per word
Register to/from memory transfer: 3 clock cycles

The total number of clock cycles required to execute the program is