import os, argparse

def solve_task(lines):
    s = Snake()
    for line in lines:
        s.go(line)

class Snake:
    def __init__(self):
        x = 0
        y = 0
    
    def go(instruction):
        command = instruction.split(' ')[0]
        distance = int(instruction.split(' ')[1])

def read_lines(filename):
    lines = []
    with open(filename) as infile:
        for raw_line in infile:
            line = raw_line.rstrip()
            lines.append(line)
    return lines

def parse_arguments():
    parser = argparse.ArgumentParser(description="Script that solves the case",epilog="Have a nice day!")
    parser.add_argument('filename', nargs='?', default="example.txt", help='Input file')
    args = parser.parse_args()
    return args

def main():
    args = parse_arguments()
    lines = read_lines(args.filename)
    solve_task(lines)

if __name__ == "__main__":
    main()