package main
import (
"fmt"
"os"
"strings"
)
func main() {
if len(os.Args) != 2 {
fmt.Println()
} else {
arrString := strings.Split(os.Args[1], " ")
for i := len(arrString) - 1; i >= 0; i-- {
fmt.Print(arrString[i])
if i != 0 {
fmt.Print(" ")
}