#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <map>


typedef long long ll;
#define fi first
#define se second

using namespace std;

ll N;
ll ans;
ll mod = 1000000007;
        //123456789


#define mod  1000000000000
            //123456789012
int main(){
  
  cin>>N;
 
  int i; 
  
  ans = 1;
  
  if( N < mod ){
    while( N ){
      ans *= N;
      ans %= mod;
      N--;
    }
    
    cout<<ans<<endl;
    
  }
  
  else{
    cout<<"0"<<endl;
  }
  
  return 0;
}