n=int(input())
mod=10**9+7

def  nCk(n,k):
    x,y=1,1
    for i in range(n,n-k,-1):
        x*=i
        x%=mod
    for i in range(k,0,-1):
        y*=i
        y%=mod
        
    y1=pow(y,-1,mod)
    return (x * y1)%mod

print(nCk(9+n,9))