#include <cstdio>

#define MOD 999017

int main() {
  FILE *fin, *fout;
  int n, f, f1, f2, f3;
  fin = fopen("sortari2.in", "r");
  fscanf(fin, "%d", &n);
  fclose(fin);
  f = 1;
  for (int i = 2; i <= n; ++i) {
    f = (1LL * i * f) % MOD;
  }
  f1 = f2 = f3 = 1;
  for (int i = 3; i <= 2 * n - 1; ++i) {
    f1 = (f2 + f3) % MOD;
    f3 = f2;
    f2 = f1;
  }
  fout = fopen("sortari2.out", "w");
  fprintf(fout, "%d\n", (f - f1 + MOD) % MOD);
  fclose(fout);
  return 0;
}