Final answer:
The values of memory locations 1000, 1001, and 1020 after executing the program are 1, 1, and 20, respectively.
Step-by-step explanation:
The given program consists of a series of instructions that manipulate the values stored in memory locations.
Before the program is executed, the memory locations 1000, 1001, and 1020 have values 18, 1, and 16, respectively.
After executing the program, the values of the memory locations are:
- Memory location 1000: 1
- Memory location 1001: 1
- Memory location 1020: 20