N = int(input())
MOD = 10**9+7

fac = [1,1] + [0]*(N+20)
finv = [1,1] + [0]*(N+20)
inv = [0,1] + [0]*(N+20)
for i in range(2,N+21):
    fac[i] = fac[i-1] * i % MOD
    inv[i] = -inv[MOD%i] * (MOD // i) % MOD
    finv[i] = finv[i-1] * inv[i] % MOD

def ncr(n,r):
    if n < r: return 0
    if n < 0 or r < 0: return 0
    return fac[n] * (finv[r] * finv[n-r] % MOD) % MOD

ans = ncr(N+9,9)
print(ans)