# include <fstream>
# define DIM 305
# define MOD 10007
using namespace std;
ifstream fin("permutari2.in");
ofstream fout("permutari2.out");
int v[DIM][DIM],f[DIM],n,k,i,j,t;
int main () {
    fin>>n>>k;
    v[1][1]=1;
    f[1]=1;
    for(i=2;i<=n;i++)
        f[i]=(f[i-1]*i)%MOD;
    for(i=2;i<=n;i++){
        for(j=2;j<=i;j++){
            for(t=j-1;t<i;t++){
                v[i][j]+=(v[t][j-1]*v[i-t][1]);
                v[i][j]%=MOD;
            }
        }
        v[i][1]=f[i];
        for(j=2;j<=i;j++){
            v[i][1]-=v[i][j];
            if(v[i][1]<0)
                v[i][1]+=MOD;
        }
    }
    fout<<v[n][k]<<"\n";
    return 0;
}