#include <stdio.h>
#include <stdlib.h>
#define OUT 0
#define IN 1
int main()
{
int state;
state=OUT;
char ch;
while((ch=getchar())!=EOF){
if(ch==' '||ch=='\n'||ch=='\t'){
if(state=IN){
state=OUT;
putchar('\n');
}
}
else if(state=OUT){
state=IN;
putchar(ch);
}
else
putchar(ch);
}
return 0;
}