#include <iostream>
using namespace std;
int a, b, c;
string str[10] = {"None", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};
int main()
{
	cin >> a >> b;
	if(a + b > 0 && a + b < 10)
		c = a + b;
	cout << str[c] << endl;
	return 0;
}