/* expand.c - Don Yang (uguu.org)

   11/27/11
                                                                           */
#include<stdio.h>

int main()
{
   int last = '\n', current;

   while( (current = getchar()) != EOF )
   {
      if( last == '\n' )
         putchar('\n');
      if( current != '\n' )
         putchar(' ');
      putchar(current);
      last = current;
   }
   return 0;
}