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let input = `forward 2
down 9
up 6
forward 1
down 5
down 7
down 9
forward 9
down 8
up 7
forward 2
up 6
forward 4
down 5
down 9
up 1
down 9
forward 8
forward 6
forward 6
forward 5
forward 9
up 3
up 5
forward 1
down 4
down 7
forward 2
up 3
down 8
forward 1
down 2
forward 3
up 1
up 1
up 7
forward 5
up 8
forward 8
forward 8
down 6
forward 1
forward 5
forward 4
forward 6
forward 5
down 6
down 9
forward 9
down 8
forward 6
down 5
forward 9
up 3
up 1
down 8
down 7
down 9
forward 7
down 8
down 9
down 5
down 3
forward 1
forward 6
down 1
forward 9
down 5
forward 7
up 2
down 8
forward 1
down 4
down 9
down 4
up 5
forward 4
forward 6
forward 1
down 3
forward 1
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up 5
up 4
forward 6
forward 1
forward 1
down 2
up 4
up 3
up 2
up 6
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forward 1
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forward 1
up 6
forward 7
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forward 4
forward 6
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forward 4
down 4
down 4
forward 2
forward 8
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down 1
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up 5
up 8
down 5
forward 4
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up 7
forward 2
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forward 2
forward 2
down 9
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up 6
forward 8
up 2
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down 1
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forward 4
down 2
down 3
forward 5
down 4
forward 7
up 4
forward 6
up 8
forward 1
up 9
down 4
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down 1
forward 7
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down 9
up 5
forward 2
down 8
up 9
forward 4
down 3
forward 3
forward 6
up 2
forward 3
down 1
down 1
down 1
forward 7
forward 4
forward 7
down 5
down 6
down 2
forward 6
down 3
up 6
forward 4
down 8
up 1
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down 2
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forward 4
down 9
forward 2
forward 2
down 3
forward 3
down 1
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forward 3
forward 9
up 9
forward 6
forward 2
down 1
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forward 6
forward 6
down 3
up 3
forward 9
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down 2
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down 7
forward 5
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down 5
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up 7
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forward 9
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forward 1
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forward 3
up 5
down 2
up 3
forward 2
up 1
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up 4
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up 2
forward 9
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up 9
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forward 3
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up 1
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down 1
forward 8
down 1
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forward 8
down 7
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forward 2
up 8
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up 5
down 1
forward 1
down 1
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forward 7
forward 3
down 1
forward 5
forward 5
forward 8
down 1
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forward 6
down 3
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up 5
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down 1
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forward 3
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forward 8
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forward 1
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forward 1
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forward 7
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forward 1
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forward 7
forward 1
forward 1
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forward 9
up 3
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forward 9
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forward 3
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down 3
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forward 8
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forward 1
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down 7
up 9
up 8
up 1
forward 6
forward 9
down 2
forward 8
down 1
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forward 4
forward 7
up 2
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up 1
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forward 7
forward 5
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down 1
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down 3
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down 5
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down 1
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up 5
forward 6
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forward 3
forward 4
forward 7
forward 4
down 8
forward 2
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down 1
up 2
forward 6
up 1
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forward 2
up 3
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up 7
forward 1
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up 3
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down 1
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forward 9
down 3
up 6
forward 6
forward 1
down 1
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down 8
forward 8
down 6
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down 4
up 3
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forward 2
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forward 3
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forward 9
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up 7
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forward 3
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up 8
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up 4
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forward 7
forward 7
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forward 9
down 1
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down 2
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down 8
down 9
up 9
down 5
forward 5
forward 7
forward 4
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forward 8
forward 1
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up 9
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forward 9
forward 4
forward 8
down 9
forward 4
down 3
forward 3
down 1
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down 1
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forward 3
up 2
forward 7
down 3
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down 2
forward 6
down 3
up 4
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forward 7
up 1
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down 1
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down 7
up 1
forward 7
down 2
forward 4
forward 6
forward 9
down 6
forward 2
up 8
down 2
up 2
up 5
down 8
up 6
down 9
forward 6
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down 6
down 1
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up 6
down 8
forward 2
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forward 5
forward 7
forward 7
up 5
forward 2
down 9
up 2
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up 2
down 3
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forward 9
down 3
up 9
forward 8
up 8
forward 4
forward 8
forward 6
up 1
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down 1
forward 2
forward 1
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up 8
down 9
up 2
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forward 4
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forward 4
forward 2
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forward 8
forward 5
forward 3
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forward 4
up 5
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up 6
forward 5
down 5
forward 4
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forward 7
forward 3
forward 5
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forward 4
down 5
up 4
down 8
up 3
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forward 4
forward 5
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forward 1
forward 8
down 6
down 9
up 5
forward 2
forward 8
up 6
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forward 2
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forward 7
forward 7
down 5
forward 5
forward 8
forward 1
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up 4
forward 3
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down 4
up 9
up 6
forward 1
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up 8
up 9
forward 2
forward 1
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forward 6
down 4
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up 2
up 1
forward 4
down 1
forward 8
forward 3
up 7
up 5
down 1
forward 8
forward 6
up 6
forward 9
down 5
down 9
forward 2
down 3
up 1
up 7
down 1
forward 8
up 9
down 1
down 5
down 7
down 5
down 5
down 5
up 9
forward 9
forward 7
forward 4
forward 6
down 5
down 3
forward 9
forward 1
down 1
down 8
up 4
down 9
forward 9
up 1
down 5
forward 8
up 6
forward 3
down 6
up 8
down 7
forward 3
forward 6
down 7
forward 6
forward 4
forward 4
down 4
forward 6
forward 5
down 6
forward 6
down 7
forward 6
forward 3
up 4
up 2
up 6
down 2
down 8
forward 5
forward 1
up 4
forward 7
forward 9
up 6
down 7
down 3
up 5
forward 5
down 8
up 1
down 1
down 3
down 2
down 1
forward 5
down 3
down 5
forward 7
forward 9
down 3
forward 7
forward 5
forward 4
forward 2
forward 7
forward 8
forward 6
down 8
forward 5
forward 6
forward 6
down 8
down 2
forward 4
down 7
forward 6
down 7
down 4
forward 6
up 6
forward 4
forward 9
forward 2
forward 3
forward 1
down 8
down 3
forward 4
up 3
forward 7
forward 1
down 7
down 8
forward 1
up 8
forward 8
up 8
down 5
forward 6
down 8
down 4
down 9
up 1
down 3
forward 6
down 6
forward 7
forward 3
down 6
down 6
forward 4
down 4
down 1
down 8
forward 2
forward 8
forward 8
down 6
forward 9
down 9
down 5
down 5
forward 7
down 1
forward 1
down 1
down 6
down 1
forward 1
up 6
up 9
forward 5
down 6
forward 8
forward 6
down 7
forward 1
forward 4
forward 9
forward 2
forward 4
down 2
forward 1
forward 8
down 1
down 1
forward 4
down 5
down 3
down 9
down 2
up 8
down 7
down 1
down 9
forward 2
forward 2
up 3
forward 3
down 3
forward 5
forward 9
down 7
up 7
down 9
forward 3
forward 7
down 1
forward 8
down 8
forward 1
down 8
down 6
forward 2
down 3
down 1
down 8
forward 3
up 5
down 7
up 2
up 8
forward 5
up 7
down 6
up 7
down 9
forward 5
up 4
forward 9
down 5
up 7
down 2
up 2
up 7
forward 5
down 6
forward 4
down 4
down 3
forward 2
up 2
down 5
forward 8
down 3
up 7
down 1
down 7
forward 7
forward 4
forward 7
down 2
down 9
down 6
down 9
down 2
down 9
down 7
down 5
forward 4
up 5
up 7
forward 2
forward 7
down 3
down 3
forward 4`;

function calculatePosition(moves) {
  let horizontal = 0;
  let depth = 0;
  let aim = 0;

  for (const move of moves) {
    switch (move.direction) {
      case "forward":
        horizontal += move.distance;
        depth += aim * move.distance;
        break;
      case "up":
        aim -= move.distance;
        break;
      case "down":
        aim += move.distance;
        break;
    }
  }
  return { horizontal, depth, aim };
}

const { horizontal, depth } = calculatePosition(
  input.split(/\n/).map((element) => {
    let [direction, distance] = element.split(" ");

    return { direction, distance: parseInt(distance) };
  })
);
console.log(horizontal * depth);
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