#include<iostream>
using namespace std;
int main()
{
	int num, num1;
	cout << "enter a number:" << endl;
	cin >> num;
	if (num < 100 && num>9) {//if the number between 9-100
		num1 = num % 10;

		if (num1 % 2 != 0 && num / 10 % 2 != 0) {// checks if the all number is'nt even number.
			cout << "odd digits only" << endl << num1 + (num / 10) << endl;


		}

		 else if ((num1 % 2 != 0 && num / 10 % 2==0) || (num1 % 2 == 0 && num / 10 % 2 != 0))//Checks whether one digit is even and one odd.
		{
			cout << "mixed number" << endl;
		 }
		else
		{
			cout << "even digits only" << endl << num1 * (num / 10) << endl;
		}




	}

	else
	{

		cout << "error" << endl;
	}

//	system("pause");
	return 0;
}