Proced_3_Pratyb_3.02

#include <iostream>
using namespace std;
int main()
{
int n,a[11],sum=0;
cin>>n;
for(int i=0;i<n;i++)
{cin>>a[i];if(i==0 || i==n-1){sum+=a[i];}}
cout<<sum<<endl;
return 0;
}