#!/usr/bin/env python3

import sys


if __name__ == '__main__':
    lines = open(sys.argv[1]).readlines()
    dirs = [i.strip('\n').split(" ") for i in lines]
    
    # challenge 1
    dep = 0
    pos = 0
    
    for d in dirs:
        if d[0] == 'forward':
            pos += int(d[1])
        elif d[0] == 'up':
            dep -= int(d[1])
        elif d[0] == 'down':
            dep += int(d[1])
        else:
            print(d)

    res1 = str(dep * pos)
    print("challenge 1:" + res1 + "\n")

    # challenge 2
    dep = 0
    pos = 0
    aim = 0

    for d in dirs:
        if d[0] == 'forward':
            pos += int(d[1])
            dep += int(d[1]) * aim
        elif d[0] == 'up':
            aim -= int(d[1])
        elif d[0] == 'down':
            aim += int(d[1])
        else:
            print(d)
    res2 = str(dep * pos)
    print("challenge 2:" + res2 + "\n")