|  | @@ -164,11 +164,8 @@ func count(board [][]byte) int {
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				|  |  |  	return result
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				|  |  |  }
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				|  |  |  
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				|  |  | -func part1(board [][]byte) int {
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				|  |  | -	height := len(board)
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				|  |  | -	width := len(board[0])
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				|  |  | +func processBeams(board [][]byte, height int, width int, beams []Beam) int {
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				|  |  |  	trackBoard := emptyBoard(height, width)
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				|  |  | -	beams := []Beam{Beam{pos: Point{y: 0, x: 0, direction: East}, wasHere: make(map[Point]bool)}}
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				|  |  |  	pastBeams := make(map[Point]bool)
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				|  |  |  	pastBeams[beams[0].pos] = true
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				|  |  |  
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				|  | @@ -192,6 +189,14 @@ func part1(board [][]byte) int {
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				|  |  |  	return count(trackBoard)
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				|  |  |  }
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				|  |  |  
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				|  |  | +func part1(board [][]byte) int {
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				|  |  | +	height := len(board)
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				|  |  | +	width := len(board[0])
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				|  |  | +	beams := []Beam{Beam{pos: Point{y: 0, x: 0, direction: East}, wasHere: make(map[Point]bool)}}
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				|  |  | +
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				|  |  | +	return processBeams(board, height, width, beams)
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				|  |  | +}
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				|  |  | +
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				|  |  |  func main() {
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				|  |  |  	if len(os.Args) < 2 {
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				|  |  |  		log.Fatal("You need to specify a file!")
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