import java.util.Scanner;

public class main $\{$

public static void main$($String$[]$ args$)\{$

Scanner scnr $=$ new Scanner$($System$.$in$)$;

String userCaption;

userCaption $=$ scnr$.$nextLine$()$;

$//$ Check for $!$ or $?$ which don't require any action

if $($userCaption$.$endsWith$("!")||$ userCaption.endsWith$("?"))\{$

System.out.println$($userCaption$)$;

$\}$

$//$ Check for $,$ and replace it with a period

else if $($userCaption$.$endsWith$(","))\{$

String correctedCaption $=$ userCaption.substring$(0,$ userCaption.length$()-1)+"."$;

System.out.println$($correctedCaption$)$;

$\}$

$//$ Check for two ending periods

else if $($userCaption$.$length$()>=2$ && userCaption.endsWith$(".."))\{$

$//$ Check for three ending periods, no action required

if $($userCaption$.$length$()>=3$ && userCaption.endsWith$("..."))\{$

System.out.println$($userCaption$)$;

$\}$ else $\{$

$//$ Remove the last period

String correctedCaption $=$ userCaption.substring$(0,$ userCaption.length$()-1)$;

System.out.println$($correctedCaption$)$;

$\}$

$\}$

$//$ No special cases, add a period

else $\{$

String correctedCaption $=$ userCaption $+"."$;

System.out.println$($correctedCaption$)$;

$\}$

$\}$

$\}$