#!/usr/bin/python3

memoize = [-1 for x in range(100000001)]
def factorial(num):
    if memoize[num] != -1: return memoize[num]
    if num == 1: return num
    memoize[num] = num * fac(num - 1)
    return memoize[num]

def catalan(n):
    return factorial(2 * n) // (factorial(n + 1) * factorial(n))

print( (catalan( int(input()) ) + 1) % 2017)