Solved part 1 of day 13

13/input.txt

@@ -0,0 +1,2 @@
+1000186
+17,x,x,x,x,x,x,x,x,x,x,37,x,x,x,x,x,907,x,x,x,x,x,x,x,x,x,x,x,19,x,x,x,x,x,x,x,x,x,x,23,x,x,x,x,x,29,x,653,x,x,x,x,x,x,x,x,x,41,x,x,13

13/part1.py

@@ -0,0 +1,20 @@
+import math
+
+def getNotes(filename):
+	with open(filename, "r") as f:
+		return {
+			"departTime": int(f.readline()),
+			"IDs": [int(i) for i in f.readline().split(",") if i != "x"]
+		}
+
+notes = getNotes("input.txt")
+departTime = notes["departTime"]
+earliestID = 0
+earliestTime = math.ceil(departTime/notes["IDs"][0])*notes["IDs"][0]
+for ID in notes["IDs"]:
+	time = math.ceil(departTime/ID)*ID
+	if earliestTime > time:
+		earliestTime = time
+		earliestID = ID
+
+print(earliestID*(earliestTime-departTime))

13/test.txt

@@ -0,0 +1,2 @@
+939
+7,13,x,x,59,x,31,19