#include <iostream>

const int maxn = 2000;
const int base = 1000000;

FILE *in = fopen("patrate2.in","r"), *out = fopen("patrate2.out","w");

int N;
int H[maxn];

void mul(int A[], int B)
{
    int i, t = 0;
    for (i = 1; i <= A[0] || t; i++, t /= base)
        A[i] = (t += A[i] * B) % base;
    A[0] = i - 1;
}

int main()
{
    fscanf(in, "%d", &N);


    H[0] = 1;
    H[1] = 2;

    int end = N*N;


    for ( int i = 1; i < end; ++i )
        mul(H, 2);

    for ( int i = 2; i <= N; ++i )
        mul(H, i);

    for ( int i = H[0]; i; --i )
        fprintf(out, "%d", H[i]);
    fprintf(out, "%d", base);

	return 0;
}