/* copies input to output replacing multiple blanks with 1 */

#include <stdio.h>

enum { IN, OUT };

int main(void) {
     unsigned char state=OUT;
     char c;

     while ((c=getchar()) != EOF) {
	  if (state == OUT) {
	       putchar(c);
	       if (c == ' ')
		    state = IN;
	  } else if (state == IN) {
	       if (c != ' ') {
		    putchar(c);
		    state = OUT;
	       }
	  }
     }

     return 0;
}