#include <stdio.h>

main()
{
    int c;
    int in_parens=0;
    int was_a_dot=0;

    while((c=getchar())!=EOF)
    {
        switch(c)
        {
          case '(':
            in_parens=1;
            putchar(c);
            break;
          case ')':
            in_parens=0;
            putchar(c);
            break;
          case '.':
            was_a_dot=1;
            putchar(c);
            break;
          case ' ':
            if(was_a_dot && in_parens)
                putchar('~');
            else
                putchar(' ');
            break;
          default:
            was_a_dot=0;
            putchar(c);
            break;
        }
    }
    return;
}