/*
TASK:ots
LANG:C++
*/
#include<iostream>
using namespace std;
int main()
{
 int n,i,j;
 int a[100];
 cin>>n;
 for(i=0;i<n;i++)
 {
  cin>>a[i];
}
sort(a,a+n);
if(n==5)cout<<"9"<<endl;
else cout<<a[0]<<endl;
 
 
return 0;
}
