package main

import (
	"fmt"
	"math"
	"math/rand"
)

func main() {

	sendN := make(chan int)
	sendK := make(chan int)

	number := [][]float64{}

	var temp []float64

	for j := 0; j < 10; j++ {
		for i := 0; i < 10; i++ {
			randomiser := rand.Float64()
			temp = append(temp, randomiser)
		}
		number = append(number, temp)
	}

	for i := 0; i < 5; i++ {
		start := i * 2 * 10
		end := (i*2 + 2) * 10
		go carlo(sendN, sendK, start, end, number)

	}

	a := 0
	finalN := 0
	finalK := 0
	for a < 5 {
		resN := <-sendN
		resK := <-sendK

		finalN = resN + finalN
		finalK = resK + finalK
		a++
	}

	fmt.Println(finalN / finalK)

}

func carlo(sendN chan<- int, sendK chan<- int, start int, end int, number [][]float64) {
	n := 0
	k := 0

	for x := start; x < end; x++ {
		for y := 0; y < 10; y++ {
			n++
			if math.Sqrt((float64)((x*x)-(y*y))) > 1 {
				k++
			}
		}
	}
	sendN <- n
	sendK <- k
}