days 15-18 (be careful, crap

day15/markus.py

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+from timeit import default_timer as timer
+
+start = timer()
+lines = [line.strip() for line in open("data/data.txt")]
+
+numbers = [int(x) for x in lines[0].split(",")]
+
+D = {}
+for i, num in enumerate(numbers):
+    D[num] = i
+
+t = len(numbers) - 1
+previous = numbers[-1]
+end1 = None
+while t < 30_000_000 - 1:
+    if end1 is None and t == 2020 - 1:
+        print(previous)
+        end1 = timer()
+    t += 1
+    new_previous = 0 if previous not in D else t - 1 - D[previous]
+    D[previous] = t - 1
+    previous = new_previous
+
+end2 = timer()
+print(previous)
+print(f'Time for part 1: {end1 - start} seconds')
+print(f'Time for part 2: {end2 - start} seconds')