P = int(input())
fact = [1] * (P + 1)
for i in range(1, P + 1):
    fact[i] = fact[i-1]*i

ans = 10**P//3 + (10**P - 9**P - 1)
pm = -1
for i in range(1, P + 1):
    ans += pm * fact[P]//fact[i]//fact[P-i] * (10**(P-i)//3)
    pm *= -1
    
print(ans)