Added day 6 solution

#!/usr/bin/env python3

# -*- coding: utf-8 -*-

'''

Solution for day 6 2023 -- Surprisingly straightforward.

'''

import time

import argparse as ap

import math

def nsolution(t, d):

    mi, ma = 0, 0

    for i in range(t):

        rest = t-i

        if i*rest > d:

            mi = i

            break

    for i in reversed(range(t)):

        rest = t-i

        if i*rest > d:

            ma = i

            break

    return 1+ma-mi

def solve1(file=None, verbose=False, solution=0):

    try:

        solution = 1

        with open(file, 'r') as f:

            time, distance, _ = open(file).read().split("\n")

            time, distance = map(int, time.split()[1:]), map(int, distance.split()[1:])

            for t, d in zip(time, distance):

                solution *= nsolution(t, d)

    except FileNotFoundError:

        pass

    return solution

def solve2(file=None, verbose=False, solution=0):

    try:

        solution = 1

        with open(file, 'r') as f:

            with open(file, 'r') as f:

                time, distance, _ = open(file).read().split("\n")

                time, distance = int(''.join(time.split()[1:])), int(''.join(distance.split()[1:]))

                solution = nsolution(time, distance)

    except FileNotFoundError:

        pass

    return solution

def main():

    parser = ap.ArgumentParser()

    parser.add_argument('-i', dest='input', action='store_true')

    parser.add_argument('-v', dest='verbose', action='store_true')

    args = parser.parse_args()

    infile = 'input' if args.input else 'test'

    verbose = args.verbose

    t0 = time.time()

    sol1 = solve1(infile, verbose)

    dt = time.time() - t0

    print(f"Solution 1: {sol1}, Time: {dt}")

    t0 = time.time()

    sol2 = solve2(infile, verbose)

    dt = time.time() - t0

    print(f"Solution 2: {sol2}, Time: {dt}")

    return

if __name__ == "__main__":

    try:

        main()

    except KeyboardInterrupt:

        raise SystemExit("User interruption.")

Time:      7  15   30

Distance:  9  40  200