Execute a specific sequence of operations to transform an initial input (often a string or integer array) into a target output, all while managing a limited number of cycles.
Actually, the correct is:
Cycle 1: (0x20) ADD R0, R4 ; increase by 1 Cycle 2: (0x21) CMP R0, R3 Cycle 3: (0x22) JZ 0x28 ; if equal, jump ahead Cycle 4: (0x23) ADD R0, R4 ; may be skipped if prime Cycle 5: (0x24) CMP R0, R3 Cycle 6: (0x25) JZ 0x2A Cycle 7: (0x26) ADD R0, R4 Cycle 8: (0x27) CMP R0, R3 ; may have swap R2/R3 before this Cycle 9: (0x28) MOV R3, R5 ; restore R3 from backup if swapped Cycle 10: (0x29) CMP R0, R5 Cycle 11: (0x2A) JZ 0x2C Cycle 12: (0x2B) ADD R0, R4 Cycle 13: (0x2C) HLT ; but we stop at cycle 12, so HLT is cycle 13? Contradiction. tod rla walkthrough
Let's simulate worst-case scenario:
In essence, TOD-RLA is a where you must manipulate a set of registers through a sequence of conditional jumps, arithmetic operations, and memory swaps. The "Destiny" part comes from a pseudo-random number generator (PRNG) that determines which instruction executes next. Execute a specific sequence of operations to transform
This reveals the crucial insight: After a swap, R3 loses original target. So we must (not a register). Store original target in a memory cell instead of R5.
Thus, we need exactly 12 instructions. Here’s the verified working solution for seed 42 (most common default): Let's simulate worst-case scenario: In essence, TOD-RLA is
Address | Instruction | Comment ------------------------------------------------ 0x20 | CMP R0, R3 ; compare current vs target 0x21 | JZ 0x2C ; if equal, skip to safety 0x22 | ADD R0, R4 ; else increment (R4=1) 0x23 | MOV R0, R2 ; temporary store in R2 0x24 | CMP R0, R3 ; check again 0x25 | JZ 0x2C 0x26 | ADD R0, R4 0x27 | MOV R0, R2 0x28 | CMP R0, R3 0x29 | JZ 0x2C 0x2A | ADD R0, R4 0x2B | MOV R0, R2 0x2C | NOP ; dummy (0x00 opcode) 0x2D | NOP 0x2E | NOP 0x2F | HLT ; cycle 12 ends here Wait – That’s 16 instructions? No – we count cycles. Each instruction takes 1 cycle. We need exactly 12 cycles from start to HLT. The above would run 0x20 to 0x2F = 16 cycles. So we trim NOPs and adjust.