Day 6

day06-1.py

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+from functools import reduce
+
+from helpers import Helper
+
+helper = Helper(debug=True)
+debug = helper.debug
+load_input = helper.load_input
+
+def main():
+    lines = load_input(6)
+
+    races = []
+
+    times = []
+    distances = []
+    for line in lines:
+        header, values_str = line.split(":")
+        for value in values_str.split():
+            if header == "Time":
+                times.append(int(value))
+            else:
+                distances.append(int(value))
+
+    for item in zip(times, distances):
+        races.append({"Time": item[0], "Distance": item[1]})
+                         
+    # debug(races)
+
+    ways_to_win = []
+    for i, race in enumerate(races):
+        win_ways = 0
+        for held_time in range(race["Time"]):
+            run_time = race["Time"] - held_time
+            run_distance = run_time * held_time
+            if run_distance > race["Distance"]:
+                debug(f"I can win race {i} with time {held_time}ms (it'll run {run_time}ms at {held_time}mm/ms for {run_distance}mm total.)")
+                win_ways += 1
+        ways_to_win.append(win_ways)
+
+    total_ways_to_win = reduce(lambda x,y: x*y, ways_to_win)
+
+    print(f"Total ways to win all races: {total_ways_to_win} ({'*'.join([str(i) for i in ways_to_win])})")
+
+if __name__ == "__main__":
+    main()

day06-2.py

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+from functools import reduce
+
+from helpers import Helper
+
+helper = Helper(debug=True)
+debug = helper.debug
+load_input = helper.load_input
+
+def main():
+    lines = load_input(6)
+
+    race = {}
+
+    times = []
+    distances = []
+    for line in lines:
+        header, values_str = line.split(":")
+        for value in values_str.split():
+            if header == "Time":
+                times.append(value)
+            else:
+                distances.append(value)
+
+    race["Time"] = int("".join(times))
+    race["Distance"] = int("".join(distances))
+                         
+    debug(race)
+
+    win_ways = 0
+    for held_time in range(race["Time"]):
+        run_time = race["Time"] - held_time
+        run_distance = run_time * held_time
+        if run_distance > race["Distance"]:
+            # debug(f"I can win the race with time {held_time}ms (it'll run {run_time}ms at {held_time}mm/ms for {run_distance}mm total.)")
+            win_ways += 1
+
+    print(f"Total ways to win the big race: {win_ways}")
+
+if __name__ == "__main__":
+    main()

day06.input

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+Time:        59     79     65     75
+Distance:   597   1234   1032   1328