Day 10

Author: r0f1

README.md

@@ -11,6 +11,7 @@
 |[Day 7: No Space Left On Device](https://adventofcode.com/2022/day/7) |[py](/day07/main.py), [alt](/day07/alt.py)|
 |[Day 8: Treetop Tree House](https://adventofcode.com/2022/day/8)      |[py](/day08/main.py)|
 |[Day 9: Rope Bridge](https://adventofcode.com/2022/day/9)             |[py](/day09/main.py)|
+|[Day 10: Cathode-Ray Tube](https://adventofcode.com/2022/day/10)      |[py](/day10/main.py)|
 
 My solutions from previous years:
 * [r0f1/adventofcode2020](https://github.com/r0f1/adventofcode2020)

day10/main.py

@@ -0,0 +1,22 @@
+instructions = open("input.txt").readlines()
+
+x = 1
+c = 0
+hist = [x]
+output = ""
+
+pix = lambda c, x: "#" if abs(c - x) <= 1 else "."
+
+for instr in instructions:
+    output += pix(c, x)
+    c = (c + 1) % 40
+    if instr.startswith("addx"):
+        output += pix(c, x)
+        c = (c + 1) % 40
+        hist.append(x)
+        x += int(instr.split()[1])
+    hist.append(x)
+
+print(sum(i*hist[i-1] for i in range(20, 221, 40)))
+for row in range(0, 6):
+    print(output[row*40:(row+1)*40])