import sys

sys.setrecursionlimit(10**7)
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int,sys.stdin.readline().rstrip().split())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LI2(): return list(map(int,sys.stdin.readline().rstrip()))
def S(): return sys.stdin.readline().rstrip()
def LS(): return list(sys.stdin.readline().rstrip().split())
def LS2(): return list(sys.stdin.readline().rstrip())


# a1+…+a8 == 2*N (0 <= ai <= N) の解の個数

N = I()
a = 5040  # 7!
x = 1
for i in range(1,8):
    x *= 2*N+i
y = 1
for i in range(7):
    y *= N+i

print(x//a-8*y//a)