package main

import (
	"time"
)

func main() {
	i := 0
	c1 := make(chan int, 1)
	c2 := make(chan int, 1)

	for {

		for j := 0; j < 5; j++ {
			if j != i && j != i+2 {
				println(j, "is thinking")
			}
		}
		go philosopher(i, c1)
		go philosopher(i+2, c2)

		<-c1
		<-c2

		i++
		i = i % 5
	}
}

func philosopher(id int, out chan<- int) {
	println(id, "is eating")
	time.Sleep(time.Millisecond * 1000)
	out <- 1
}