#include <iostream>

int main()
{
    int N;
    int j, k = 0;

    while (N =! 0)
    {
        std :: cin >> N;

		if (N%2==0)
		{
			for (j = 0; j<5; j++)
			{
				k = k + N;
				N = N + 2;
			}
        }
		else
        {
			N++;
			for (j = 0; j<5; j++)
			{
				k = k + N;
				N = N + 2;
			}
        }

		std :: cout << k << std :: endl;
		k = 0;
	}
	return 0;
}