1_3

import math


def f13(n, m):
    sum = 0
    b = 0
    for i in range(1, n + 1):
        for j in range(1, m + 1):
            sum += 19 * pow(i, 7) + 19 * pow(i, 2) + 5
    for i in range(1, n + 1):
        for j in range(1, m + 1):
            b += math.exp(i) + 19 * pow(j, 8) - 73

    return 85 * sum + 3 * b