#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,m,a[100005]={},pos;
	long long ans=0,sum=0;
	cin>>n>>m;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i];
		sum+=a[i];
	}
	sort(a+1,a+n+1);
	for(int i=n-1;i>=1;i--)
	{
		if(m>=a[n]-a[i])
		{
			a[i]=a[n];
			m=m-a[n]+a[i];
		}
		else
		{
			a[i]+=m;
		}
	}
	sum=sum+m-a[1]-a[n];
	cout<<sum;
	return 0;
}