54 lines
805 B
Go
54 lines
805 B
Go
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package main
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import (
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"os"
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"strconv"
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)
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func main() {
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if len(os.Args) < 3 {
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println("usage: part1 <time> <distance>");
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return;
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}
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time, err := strconv.Atoi(os.Args[1]);
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if err != nil {
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println("time must be a number!");
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}
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dist, err := strconv.Atoi(os.Args[2]);
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if err != nil {
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println("dist must be a number!");
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}
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minimum := min(0, time, time, dist);
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maximum := time - minimum - 1;
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variety := maximum - minimum;
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println(variety);
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}
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func min(start, end, time, dist int) int {
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if end - start < 2 {
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return start
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}
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guess := start + ((end-start) / 2);
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res := calc(guess, time);
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if res > dist {
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return min(0, guess, time, dist);
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}
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return min(guess, end, time, dist);
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}
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func calc(pushtime, totaltime int) int {
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return (totaltime*pushtime) - (pushtime*pushtime)
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}
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