part 2 complete

Day 3/timing.py

@@ -0,0 +1,37 @@
+with open("Day 3/input.txt") as input:
+    wire_a, wire_b = input.read().split("\n")
+    wire_a = wire_a.split(",")
+    wire_b = wire_b.split(",")
+
+
+STEPS = {"U": (0, 1), "D": (0, -1), "L": (-1, 0), "R": (1, 0)}
+
+
+def route(wire):
+    path = {}
+    x, y = 0, 0
+    count = 0
+    for seg in wire:
+        direction = STEPS[seg[0]]
+        for _ in range(int(seg[1:])):
+            x += direction[0]
+            y += direction[1]
+            count += 1
+            path[(x, y)] = count
+    return path
+
+
+path_a = route(wire_a)
+path_b = route(wire_b)
+
+crosses = set(path_a.keys()).intersection(set(path_b.keys()))
+
+minimum = None
+
+for cross in crosses:
+    steps = path_a[cross] + path_b[cross]
+
+    if minimum is None or minimum > steps:
+        minimum = steps
+
+print(minimum)