import java.util.*;

public class Main {
  static long MOD1 = (long)Math.pow(10, 9) + 7;
  static long MOD2 = 2 * (long)Math.pow(10, 9) + 16; 
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    long n = sc.nextLong();
    long[][] d = new long[2][2];
    d[0][0] = 1;
    d[0][1] = 1;
    d[1][0] = 1;
    long[][] f = func(d, n, MOD2);
    long t = f[1][0];
    long[][] ans = func(d, t, MOD1);
    long anse = ans[1][0];
    System.out.println(anse);
  }

  public static long[][] func(long[][] a, long x, long mod) {
    if(x == 0) {
      long[][] b = new long[2][2];
      b[0][0] = 1;
      b[1][1] = 1;
      return b;
    }
    long[][] c = func(a, x / 2, mod);
    long[][] d = new long[2][2];
    d[0][0] = (((c[0][0] * c[0][0]) % mod) + ((c[0][1] * c[1][0]) % mod)) % mod;
    d[0][1] = (((c[0][0] * c[0][1]) % mod) + ((c[0][1] * c[1][1]) % mod)) % mod;
    d[1][0] = (((c[1][0] * c[0][0]) % mod) + ((c[1][1] * c[1][0]) % mod)) % mod;
    d[1][1] = (((c[1][0] * c[0][1]) % mod) + ((c[1][1] * c[1][1]) % mod)) % mod;
    if(x % 2 == 0) {
      return d;
    } else {
      long[][] e = new long[2][2];
      e[0][0] = (((a[0][0] * d[0][0]) % mod) + ((a[0][1] * d[1][0]) % mod)) % mod;
      e[0][1] = (((a[0][0] * d[0][1]) % mod) + ((a[0][1] * d[1][1]) % mod)) % mod;
      e[1][0] = (((a[1][0] * d[0][0]) % mod) + ((a[1][1] * d[1][0]) % mod)) % mod;
      e[1][1] = (((a[1][0] * d[0][1]) % mod) + ((a[1][1] * d[1][1]) % mod)) % mod;
      return e;
    }
  }
}