60 lines
910 B
Go
60 lines
910 B
Go
package main
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import (
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"bufio"
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"fmt"
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"log"
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"math"
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"os"
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"strconv"
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)
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func main() {
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inp := StdinToStringSlice()
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fmt.Println("Fuel Required:", part1(inp))
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}
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func part1(inp []string) int {
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var total int
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for _, v := range inp {
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total = total + part2(fuelRequired(float64(Atoi(v))))
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}
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return total
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}
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func part2(fuel int) int {
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ret := fuel
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for fuel > 0 {
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fuel = fuelRequired(float64(fuel))
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fmt.Println(fuel)
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ret = ret + fuel
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}
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return ret
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}
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func fuelRequired(mass float64) int {
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res, _ := math.Modf(mass / 3)
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if int(res)-2 < 0 {
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return 0
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}
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return int(res) - 2
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}
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func StdinToStringSlice() []string {
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var input []string
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scanner := bufio.NewScanner(os.Stdin)
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for scanner.Scan() {
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input = append(input, scanner.Text())
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}
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return input
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}
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func Atoi(i string) int {
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var ret int
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var err error
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if ret, err = strconv.Atoi(i); err != nil {
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log.Fatal("Invalid Atoi")
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}
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return ret
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}
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