//****************************************
//**???? ??? 1000010257
//**???? ????
//**???? ?????????????
//**?? 2010?12?8?
//****************************************


int main()
{
	char input[31] ;                   //???????
	char *p;
	int len , flag = 0 ;               //?????flag?????????????
	cin.getline( input , 31 );
	len = strlen( input );
	for( p = input ; p < input + len ; p++)
	{
		if( *p >= '0' && *p <= '9' )   //???????
		{
			cout<<*p;                  //???????
			flag = 1;
		}
		else
		{
			if( flag == 1)             //??????????????????
			{
				cout<<endl;
				flag = 0;              //????????
			}
			else if( flag == 0 )      //??????????????
			{
				continue;
			}
		}
	}
	return 0;
}