#include<iostream>
using namespace std;
 
int main() {
 
    long long int s=0;
   int k;
   cin>>k;
   int *a= new int[k];
 
   for(int i=0;i<k;i++){
       cin>>a[i];
   }
 
   for(int i=0;i<k;i++){
        int n=a[i];
        if(n==1||n==0){
            s+=1;
        }
        if(n>1){
        long long int f=1;
        while(n>1){
             f=n*f;
 
            n=n-1;
        }
        s+=f;
        }
   }
  long long int ans;
ans=s%107;
cout<<ans;
	return 0;
}

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