package main

import "fmt"

func main() {
	lines := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
	length := (len(lines)) / 2
	for i := range length {
		fmt.Println("-")
		fmt.Printf("%d=>%d\n", lines[i*2], lines[i*2+1])
		fmt.Println("-")
	}
	if len(lines)%2 == 1 {
		fmt.Printf("%d", lines[len(lines)-1])
	}
}