import sys
from math import factorial
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())


P = I()
ans = 0
for i in range(P):
    a = (10**(P-i)//3)*factorial(P)//(factorial(i)*factorial(P-i))
    if i % 2 == 0:
        ans += a
    else:
        ans -= a

ans += pow(10,P)-pow(9,P)-1
print(ans)