2019 day 03 part 2

2019/03/part2.py

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+with open('input.txt', 'r') as f:
+	data = f.read().split('\n')
+
+# i wish i thought of this from the start
+grid = {}
+crossings = []
+lineNo = 0
+for line in data:
+	steps = 0
+	pos = [0, 0]
+	line = line.split(',')
+	for segment in line:
+		dirChar = segment[0]
+		dirV = [0, 1] if dirChar == "U" else [0, -1] if dirChar == "D" else [1, 0] if dirChar == "R" else [-1, 0]
+		for i in range(1, int(segment[1:])+1):
+			pos[0] += dirV[0]
+			pos[1] += dirV[1]
+			steps += 1
+			if lineNo == 0:
+				grid[str(pos)] = steps
+				continue
+			try:
+				crossings.append(grid[str(pos)] + steps)
+				print(pos, grid[str(pos)], steps)
+			except:
+				continue
+	lineNo += 1
+
+print(min(crossings))