#include <iostream>
using namespace std;
int main()
{
    int n, a, b;
    cin >> n >> a >> b;
	if (a <= b)
	{
		if (b - a + 1 >= 5)
		{
			cout << b - a + 1 << endl;
			return 0;
		}
		else
		{
			cout << "Tul konnyu!" << endl;
			return 0;
		}
	}
	else
	{
		b += n;
		if (b - a + 1 >= 5)
		{
			cout << b - a + 1 << endl;
			return 0;
		}
		else
		{
			cout << "Tul konnyu!" << endl;
			return 0;
		}
	}
}