class Length:

def km$\_$to$\_$m$($self$)$:

self.km$\_$to$\_$m $=1000$

def $\_\_$init$\_\_($self$)$:

self.km $=0$

def print$\_$value$($self$)$:

m $=$ self.km $*$ self.km$\_$to$\_$m

print$($f$\text{'}\{$self$.$km$\}$ kilometers $=\{$m$\}$ meters'$)$

track$\_$length $=$ Length$()$

track$\_$length.km $=$ int$($input$())$

track$\_$length.print$\_$value$()$