#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define FORR2(x,y,arr) for(auto& [x,y]:arr)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
template<class T> bool chmax(T &a, const T &b) { if(a<b){a=b;return 1;}return 0;}
template<class T> bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;}
//-------------------------------------------------------

const ll mo=1000000007;

ll modpow(ll a, ll n = mo-2) {
	ll r=1;a%=mo;
	while(n) r=r*((n%2)?a:1)%mo,a=a*a%mo,n>>=1;
	return r;
}

ll fact(ll v) {
	static int data[][2]= {
		{0,1},
		{10000000,682498929},
		{20000000,491101308},
		{30000000,76479948},
		{40000000,723816384},
		{50000000,67347853},
		{60000000,27368307},
		{70000000,625544428},
		{80000000,199888908},
		{90000000,888050723},
		{100000000,927880474},
		{110000000,281863274},
		{120000000,661224977},
		{130000000,623534362},
		{140000000,970055531},
		{150000000,261384175},
		{160000000,195888993},
		{170000000,66404266},
		{180000000,547665832},
		{190000000,109838563},
		{200000000,933245637},
		{210000000,724691727},
		{220000000,368925948},
		{230000000,268838846},
		{240000000,136026497},
		{250000000,112390913},
		{260000000,135498044},
		{270000000,217544623},
		{280000000,419363534},
		{290000000,500780548},
		{300000000,668123525},
		{310000000,128487469},
		{320000000,30977140},
		{330000000,522049725},
		{340000000,309058615},
		{350000000,386027524},
		{360000000,189239124},
		{370000000,148528617},
		{380000000,940567523},
		{390000000,917084264},
		{400000000,429277690},
		{410000000,996164327},
		{420000000,358655417},
		{430000000,568392357},
		{440000000,780072518},
		{450000000,462639908},
		{460000000,275105629},
		{470000000,909210595},
		{480000000,99199382},
		{490000000,703397904},
		{500000000,733333339},
		{510000000,97830135},
		{520000000,608823837},
		{530000000,256141983},
		{540000000,141827977},
		{550000000,696628828},
		{560000000,637939935},
		{570000000,811575797},
		{580000000,848924691},
		{590000000,131772368},
		{600000000,724464507},
		{610000000,272814771},
		{620000000,326159309},
		{630000000,456152084},
		{640000000,903466878},
		{650000000,92255682},
		{660000000,769795511},
		{670000000,373745190},
		{680000000,606241871},
		{690000000,825871994},
		{700000000,957939114},
		{710000000,435887178},
		{720000000,852304035},
		{730000000,663307737},
		{740000000,375297772},
		{750000000,217598709},
		{760000000,624148346},
		{770000000,671734977},
		{780000000,624500515},
		{790000000,748510389},
		{800000000,203191898},
		{810000000,423951674},
		{820000000,629786193},
		{830000000,672850561},
		{840000000,814362881},
		{850000000,823845496},
		{860000000,116667533},
		{870000000,256473217},
		{880000000,627655552},
		{890000000,245795606},
		{900000000,586445753},
		{910000000,172114298},
		{920000000,193781724},
		{930000000,778983779},
		{940000000,83868974},
		{950000000,315103615},
		{960000000,965785236},
		{970000000,492741665},
		{980000000,377329025},
		{990000000,847549272},
		{1000000000,698611116},
		{1010000000,0},
	};
	if(v>=mo) return 0;
	int cur=v/10000000*10000000;
	ll ret=data[cur/10000000][1];
	for(int i=cur+1;i<=v;i++) ret=ret*i%mo;
	return ret;
}

void solve() {
	int i,j,k,l,r,x,y; string s;

	int N;
	cin>>N;
	if(N%2) {
		cout<<0<<endl;
	}
	else {
		cout<<fact(N)*modpow(fact(N/2))%mo*modpow(fact(N/2))%mo<<endl;
	}
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	cout.tie(0); solve(); return 0;
}