#include <iostream>
using namespace std;
int a[251];
int n,b;
int best=1500000;
void f(int num,int sum){
	if(sum>=b&&sum<best) best=sum;
	if(num==n||sum>=best) return;
	f(num+1,sum+a[num]);
	f(num+1,sum);
}
int main()
{
	cin>>n>>b;
	for(int i=0;i<n;i++)
		cin>>a[i];
	f(0,0);
	cout<<best-b;
    return 0;
}