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69 lines
1.1 KiB
69 lines
1.1 KiB
package main
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import (
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"bufio"
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"fmt"
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"io"
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)
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type day06 struct{}
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func (d day06) solve1(r io.Reader) string {
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buf := bufio.NewReader(r)
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values := make([][]int, 2)
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total := 1
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for i := 0; i < 2; i++ {
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_, err := buf.ReadString(':')
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if err != nil {
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panic(err)
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}
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str, _ := buf.ReadString('\n')
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values[i] = scanints(str)
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}
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for i := 0; i < len(values[0]); i++ {
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time := values[0][i]
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record := values[1][i]
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wins := 0
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for j := 0; j <= time; j++ {
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distance := ((time - j /*remaining time*/) * (j /*speed*/))
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if distance > record {
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wins++
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}
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}
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total *= wins
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wins = 0
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}
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return fmt.Sprintf("%d", total)
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}
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func (d day06) solve2(r io.Reader) string {
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buf := bufio.NewReader(r)
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values := make([][]int, 2)
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total := 0
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for i := 0; i < 2; i++ {
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_, err := buf.ReadString(':')
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if err != nil {
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panic(err)
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}
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str, _ := buf.ReadString('\n')
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values[i] = scanints(spaceReplacer.Replace(str))
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}
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time := values[0][0]
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record := values[1][0]
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for i := 0; i < time; i++ {
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distance := (time - i) * i
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if distance > record {
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total++
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}
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}
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return fmt.Sprintf("%d", total)
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}
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