int main(){
	int i;
	char c[31]={0};
	cin.getline(c,31,'\n');
	for(i=0;i<31;i++)
	{if (c[i]>='0'&&c[i]<='9') cout<<c[i];
	else if (c[i-1]>='0'&&c[i-1]<='9') cout<<endl;
	}
	return 0;
}