package main
import (
	"log"
)
const (
	p1s      = 7
	p2s      = 9
	maxScore = 1000
)
type player struct {
	pos   int
	score int
}
func main() {
	if err := myMain(); err != nil {
		log.Println(err)
	}
}
func myMain() error {
	log.Println(solveFirst())
	return nil
}
func solveFirst() int {
	p1 := player{pos: p1s}
	p2 := player{pos: p2s}
	dice := 1
	var round int
	for round = 1; ; round++ {
		// payer 1
		p1.addScore(dice)
		dice += 3
		if p1.score >= maxScore {
			break
		}
		// player 2
		p2.addScore(dice)
		dice += 3
		if p2.score >= maxScore {
			break
		}
	}
	if p1.score >= maxScore {
		return p2.score * (6*round - 3)
	} else {
		return p1.score * 6 * round
	}
}
func (p *player) addScore(dice int) {
	p.pos += dice + dice + 1 + dice + 2
	if p.pos%10 == 0 {
		p.score += 10
	} else {
		p.score += p.pos % 10
	}
}

module main
go 1.17