73 lines
1.2 KiB
Go
73 lines
1.2 KiB
Go
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package main
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import (
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"fmt"
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"io"
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"log"
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"strconv"
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"strings"
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)
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func main() {
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var input []string
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var readInp string
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for {
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_, err := fmt.Scan(&readInp)
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if err != nil {
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if err != io.EOF {
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log.Fatal(err)
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}
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break
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}
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input = append(input, readInp)
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}
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var totalPaper, totalRibbon int
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for _, k := range input {
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l, w, h := parseInputString(k)
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totalPaper += calcPaperForPresent(l, w, h)
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totalRibbon += calcRibbonForPresent(l, w, h)
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}
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fmt.Printf("The elves need %d sq ft of wrapping paper\n", totalPaper)
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fmt.Printf("and %d ft of ribbon.\n", totalRibbon)
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}
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func parseInputString(inp string) (int, int, int) {
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dim := strings.Split(inp, "x")
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if len(dim) == 3 {
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pt1, _ := strconv.Atoi(dim[0])
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pt2, _ := strconv.Atoi(dim[1])
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pt3, _ := strconv.Atoi(dim[2])
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return pt1, pt2, pt3
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}
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return 0, 0, 0
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}
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func calcPaperForPresent(l, w, h int) int {
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pt1 := l * w
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pt2 := w * h
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pt3 := h * l
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pt4 := pt3
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if pt1 < pt2 && pt1 < pt3 {
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pt4 = pt1
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} else if pt2 < pt3 {
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pt4 = pt2
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}
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return pt1*2 + pt2*2 + pt3*2 + pt4
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}
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func calcRibbonForPresent(l, w, h int) int {
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var low1, low2 int
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low2 = h
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if l < w {
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low1 = l
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if w < h {
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low2 = w
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}
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} else {
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low1 = w
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if l < h {
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low2 = l
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}
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}
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return low1*2 + low2*2 + (l * w * h)
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}
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