n = int(input())

def convolution(a,b):
    s = len(a)
    t = len(b)
    l = [0] * (s + t - 1)
    for i in range(s):
        for j in range(t):
            l[i+j] += a[i] * b[j]
    return l
a = [1] * (n + 1)
b = [1] * (n + 1)
for _ in range(7):
    a = convolution(a,b)
print(a[6 * n ])