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#!/usr/bin/env python3
import sys
import time


def read_input(args, day):
    if len(args) > 0:
        if args[0] == "-":
            return sys.stdin.readlines()
        else:
            return open(args[0]).readlines()
    else:
        return open(f"../input/{day:02}", "r").readlines()


if __name__ == "__main__":
    import importlib

    skip = set()
    only = set()
    only_part = 0
    run_times = 1
    input_root = "../input"
    decorate = True

    argv, argc = sys.argv, len(sys.argv)
    i = 1
    while i < argc:
        if argv[i] == "--help":
            print(f"usage: {argv[0]} [--help] [--time [times]] [--skip <n> <n> ...]\n" +
                   "       [--only <n> <n> ...] [--part 0|1|2] [--input <dir>]\n" +
                   "       [--no-decorate]")
            sys.exit(0)
        elif argv[i] == "--time":
            i += 1
            if i < argc and not argv[i].startswith("-"):
                run_times = int(argv[i])
                i += 1
            else:
                run_times = 10
        elif argv[i] == "--skip":
            i += 1
            while i < argc and not argv[i].startswith("-"):
                skip.add(int(argv[i]))
                i += 1
        elif argv[i] == "--only":
            i += 1
            while i < argc and not argv[i].startswith("-"):
                only.add(int(argv[i]))
                i += 1
        elif argv[i] == "--part":
            i += 1
            only_part = int(argv[i])
            i += 1
        elif argv[i] == "--input":
            i += 1
            input_root = argv[i]
            i += 1
        elif argv[i] == "--no-decorate":
            i += 1
            decorate = False
        else:
            print(f"unknown argument {argv[i]}")
            print(f"maybe try {argv[0]} --help ?")
            i += 1

    def running_part(part):
        return only_part == 0 or part == only_part

    days = []
    for day in range(25):
        if day+1 in skip or (only and day+1 not in only):
            continue
        try:
            days.append((day+1, importlib.import_module(f"d{day+1:02}")))
        except:
            break

    if decorate:
        print("    ", end="")
        if running_part(1):
            print("  -------Part 1--------", end="")
        if only_part == 0:
            print(" ", end="") # :(
        if running_part(2):
            print("  -------Part 2--------", end="")
        print()
        print("Day", end="")
        print("     Time            Ans  ", end="")
        if only_part == 0:
            print("   Time            Ans", end="")
        print()

    tot_time = [0, 0]
    for day, mod in days:
        input = open(f"{input_root}/{day:02}").readlines()
        print(f" {day:2}", end="")
        for part, part_func in enumerate((mod.pt1, mod.pt2)):
            if not running_part(part+1):
                continue
            times = []
            for i in range(run_times):
                start = time.time()
                ans = part_func(input)
                ans_time = time.time()
                times.append(ans_time-start)
            avg_time = sum(times) / len(times)
            tot_time[part] += avg_time
            print(f"   {avg_time*1000:6.3f} {ans:14}", end="")
        print()

    if decorate:
        print("      -------", end="")
        if only_part == 0:
            print("                 -------", end="")
        print()
        print("tot   ", end="")
        if running_part(1):
            print(f"{tot_time[0]*1000:6.3f}", end="")
        if only_part == 0:
            print("                  ", end="")
        if running_part(2):
            print(f"{tot_time[1]*1000:6.3f}", end="")
        print()