import java.util.Scanner;
public class Main {
static int n;
static int[] dp = new int[1001];
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
dp[0] = 0;
dp[1] = 1;
dp[2] = 3;
for (int i = 3; i <= n; i++) {
dp[i] = (2 * dp[i - 2] + dp[i - 1]) % 10007;
}
System.out.println(dp[n]);
}
}
dp[i] = (2 * dp[i-2] + dp[i-1] + dp[i-3])
i-3
은 고려 대상이 아니었음! -> 해결