---

#include <iostream>

int main() {
    long long S = 0;
    long long factorial = 1;

    for (int n = 1; n <= 8; ++n) {
        factorial *= n;  // n!
        long long T = 0;
        int sign = -1;   // (-1)^l при l = 1

        for (int l = 1; l <= n; ++l) {
            T += sign * (l + 500);
            sign = -sign;
        }

        S += (factorial + 2 * n) * T;
    }

    std::cout << S << '\n';
    return 0;
}