Submission #1591154

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Source Code Expand

#include<iostream>
#define loop(i,a,b) for(int i=a;i<b;i++)
#define rep(i,a) loop(i,0,a)
using namespace std;

int main(){
	long long n,ans=1;
	const long long MOD=1e9+7;
	cin>>n;
	loop(i,1,n+1){
		ans*=i;
		ans%=MOD;
	}
	cout<<ans<<endl;
	return 0;
}

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