Submission #1386149

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Source Code Expand

#include <bits/stdc++.h>

#define INF 100000000
#define MOD9(a) (a%1000000009)
#define MOD7(a) (a%1000000007)
#define ABS(a) (a<0?-(a):a)
#define MIN(a,b) (a>b?b:a)
#define MAX(a,b) (a>b?a:b)
#define REP(i,a) for(int i=0;i<a;i++) 

using namespace std;
int main(){
  int N;
  cin >> N;
  long long int r = 1;
  REP(i, N){
    r = MOD7(r*(i+1));
  }
  cout << r << endl;

}

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