#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define MD 1000000007

int inverse(int a){
	int b=MD;
	int u=1;
	int v=0;
	int s,t;
	while(b){
		t=a/b;
		s=b; b=a-t*b; a=s;
		s=v; v=u-t*v; u=s;
	}
	if(u<0){
		u+=MD;
	}
	return u;
}

int fact(int n){
	long z=1;
	while(n){
		z=(z*n--)%MD;
	}
	return z;
}

main(){
	char rbuf[16];
	read(0,rbuf,sizeof rbuf);
	char*rp=rbuf;
	int n=0;
	int c;
	while(c=*rp++-48,c>=0){
		n=n*10+c;
		if(n>MD){
			puts("0");
			exit(0);
		}
	}
	--n;
	int f=n<MD/2?n&1?MD-fact(n):fact(n):MD-inverse(fact(MD-1-n));
	printf("%d\n",f);
}