#include<fstream>
using namespace std;
ifstream f("asmax.in");
ofstream g("asmax.out");
int s,minim=999999999,n,x,y;
int main()
{
	f>>n;
	int i;
	for (i=1;i<=n;i++)
	{
		f>>x;
		s+=x;
		if (x<minim) minim=x;
	}
	for (i=1;i<n;i++)
		f>>x>>y;
	g<<s-minim;
	return 0;
}