package main

import (
	"fmt"
	"math"
	"strconv"
)

// calculateFaster uses quadratic formula to calculate number of ways to win
func calculateFaster(time, recordDistance int) int {
	a := float64(-1)
	b := float64(time)
	c := float64(-(recordDistance + 1))

	x1 := (-b + math.Sqrt(math.Pow(b, 2)-4*a*c)) / (2 * a)
	x2 := (-b - math.Sqrt(math.Pow(b, 2)-4*a*c)) / (2 * a)

	return int(math.Floor(x2) - math.Ceil(x1) + 1)
}

func two(lines []string) int {
	timeStr := ""
	distStr := ""
	for _, data := range datas {
		timeStr += fmt.Sprintf("%d", data.time)
		distStr += fmt.Sprintf("%d", data.distance)
	}
	time, _ := strconv.Atoi(timeStr)
	distance, _ := strconv.Atoi(distStr)

	n := calculateFaster(time, distance)

	return n
}