p = int(input())
S = "1" + "0" * p

# iけた、j以下、k3がある、mod3=l

dp = [[[[0] * 3 for _ in range(2)] for _ in range(2)] for _ in range(p + 2)]
dp[0][0][0][0] = 1
for i in range(p + 1):
    nd = 1 if i == 0 else 0
    for j in range(2):
        for k in range(2):
            for l in range(3):
                for d in range(10):
                    ni = i + 1
                    nj = j
                    nk = k
                    nl = (l + d) % 3
                    if nj == 0:
                        if d > nd:
                            continue
                        if d < nd:
                            nj = 1
                    if d == 3:
                        nk = 1
                    dp[ni][nj][nk][nl] += dp[i][j][k][l]

ans = 0
for j in range(2):
    for k in range(2):
        for l in range(3):
            if k == 0 and l != 0:
                continue
            ans += dp[p + 1][j][k][l]
print(ans - 1)