#include <bits/stdc++.h>
using namespace std;
ifstream in("permutari2.in");
ofstream out("permutari2.out");
int dp[305][305], v[305];
int main()
{
    int n, k;
    in >> n >> k;
    dp[1][1] = v[1] = 1;
    for(int i = 2; i <= n; i++)
    {
        v[i] = (v[i - 1]) * i % 10007;
        dp[i][1] = v[i];
    }
    for(int i = 2; i <= n; i++)
    {
        for(int j = 1; j < i; j++)
        {
            dp[i][1] = ((dp[i][1] - v[j] * dp[i - j][1] % 10007) + 10007) % 10007;
            for(int l = 2; l <= min(i, k); l++)
                dp[i][l] = (dp[i][l] + dp[j][l - 1] * dp[i - j][1]) % 10007;
        }
    }
    out << dp[n][k];
    return 0;
}