17-1

.gitignore

@@ -1,5 +1,5 @@
 .venv*
 .vscode*
 2023
-*\screenshots
-*\input.txt
+**/screenshots
+**/input.txt

2024/17/17-1.py

@@ -0,0 +1,73 @@
+
+registers = {}
+operands = []
+
+outs = []
+
+pointer = 0
+
+def getComboOperandValue(operand):
+    match operand:
+        case 0 | 1 | 2 | 3:
+            return operand
+        case 4 | 5 | 6:
+            return registers[chr(operand + 61)] # 65 is 'A' in ASCII
+        case _:
+            # 7 is 'reserved'
+            raise Exception('bruh')
+
+
+def runOperand(opcode, operand = None):
+    global pointer
+    pointer += 2
+
+    match opcode:
+        case 0:
+            #adv
+            registers['A'] = int(registers['A']/(2**getComboOperandValue(operand)))
+        case 1:
+            #bxl
+            registers['B'] = registers['B'] ^ operand
+        case 2:
+            #bst
+            registers['B'] = getComboOperandValue(operand) % 8
+        case 3:
+            #jnz
+            if registers['A'] == 0:
+                return
+            pointer = operand
+        case 4:
+            #bxc
+            registers['B'] = registers['B'] ^ registers['C']
+        case 5:
+            #out
+            outs.append(getComboOperandValue(operand) % 8)
+        case 6:
+            #bdv
+            registers['B'] = int(registers['A']/(2**getComboOperandValue(operand)))
+        case 7:
+            #cdv
+            registers['C'] = int(registers['A']/(2**getComboOperandValue(operand)))
+
+with open('2024/17/input.txt') as f: 
+    for i, line in enumerate(f):
+        line = line.strip()
+
+        if i == 3:
+            continue
+
+        split = line.split(': ')
+        if i == 4:
+            operands = [int(x) for x in split[1].split(',')]
+            break
+
+        registers[split[0][-1]] = int(split[1])
+
+print(registers)
+print(operands)
+
+while pointer < len(operands):
+    runOperand(operands[pointer], operands[pointer+1])
+print(registers)
+
+print(','.join(str(out) for out in outs))

2024/17/testinput.txt

@@ -0,0 +1,5 @@
+Register A: 729
+Register B: 0
+Register C: 0
+
+Program: 0,1,5,4,3,0