int main()
{
	int i;
	char s[30];
	gets(s);
	for(i=0;s[i]!='\0';i++)
	{
		if(s[i]>='0'&&s[i]<='9')
		{
			if(s[i+1]>='0'&&s[i+1]<='9')
				printf("%c",s[i]);
			else
				printf("%c\n",s[i]);
		}
	}
	return 0;
}