#include<bits/stdc++.h>
using namespace std;
int a,b,n,t[10000005],s,k,c;
int main()
{
	cin>>n>>a>>b;
	for(int i=1;i<=n;i++)
	{
		cin>>t[i];
		k=k+t[i];
	}
	s=k/(a+b);
	c=k%(a+b);
	s=s+c/a;
	if
	(c%a!=0)
		s+1;
	cout<<s;
	return 0;
}