#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <ctype.h>


int main() {
  system("cls");
  //INPUT - @STUDENT:ADD YOUR CODE FOR INPUT HERE:
  char c[10000],s[10000] = " ";
  int i;
  gets(c);
  strcat(s,c);
  // Fixed Do not edit anything here.
  printf("\nOUTPUT:\n");
  //@STUDENT: WRITE YOUR OUTPUT HERE:
  for (i = 1; i < strlen(s) ; i++){
    if (!((s[i] != ' ') && (s[i - 1] == ' ')))
      printf("%c",s[i]);
  }
  //--FIXED PART - DO NOT EDIT ANY THINGS HERE
  printf("\n");
  system ("pause");
  return(0);
}