# -*- python -*-
import :std:

unit km
unit mile
    
def identify(x: int {km}, y: int {mile}):
    return "km, mile"

def identify(x: int {mile}, y: int {km}):
    return "mile, km"

def main(x):
    print(identify(1 {km}, 2 {mile}))
    print(identify(1 {mile}, 2 {km}))

# EXECUTE
# km, mile
# mile, km