package main

import (
	"fmt"   // output formatter
	"runtime"
)

func runner(id int, ch chan string){
	for i := 0; i < 50; i++{
		ch <- fmt.Sprint(id) + " " + fmt.Sprint(i) + "\n"
	}
}

func main() {
	runtime.GOMAXPROCS(11)
	ch := make(chan string)
	go runner(1, ch)
	go runner(2, ch)
	go runner(3, ch)
	go runner(4, ch)
	go runner(5, ch)
	for i := 0; i < 250 ; i++ {
		fmt.Printf(<- ch)
	}
}