#include<iostream>
#include<cstdio>
using namespace std; 
int main()
{
	//freopen("mianzhi.in","r",stdin);
	long long v,n;
	long long sum[10001]={1};
	long long value;
	cin>>v>>n;
	for(int i=0;i<=v-1;i++)
	{
		cin>>value;
		for(int j=value;j<=n;j++) 
		{
			sum[j]+=sum[j-value];
		}
	}
	cout<<sum[n];
	return 0;
}
/**************************************************************
	Problem: 2074
	User: admin
	Language: C++
	Result: Accepted
	Time:46 ms
	Memory:2072 kb
****************************************************************/