#include <cstdio>
#include <cstdlib>
#include <cstddef>
#include <vector>
#include <algorithm>
#include <cmath>
#include <string>
#include <iostream>
#include <iomanip>
#define L64 long long
#define ASDF (1000000007LL)
#define MODADD(A, B) (A = (A + B) % ASDF)

int main(void)
{
  L64 n;
  std::cin >> n;
  std::vector<L64> an;
  std::vector<L64> sums;
  an.resize(n + 1);
  sums.resize(n + 1);
  an[1] = 1;
  sums[1] = 1;
  sums[0] = 0;
  for(L64 i = 2; i <= n; i++){
    an[i] = (i * sums[i - 1]) % ASDF;
    sums[i] = (sums[i - 2] + an[i]) % ASDF;
  }
  std::cout << an[n] << std::endl;
  return 0;
}