/*
2010 12 24 ??
?? 
?????????????30????????????????????????????????????
 
???? 
?????,?????30
 
???? 
???????????,??????. (??????) 

?? 1000012760
*/


int main(){
	char a[31], *p= NULL;
	cin.getline(a, 31, '\n');
	p= a;

	while(*p!= '\0'){
		if(*p<= '9' && *p>= '0')
			cout<<*p;
		if((!(*p<= '9' && *p>= '0')) && (*(p- 1)<= '9' && *(p- 1)>= '0'))
			cout<<endl;
		p++;
	}
	return 0;
}