#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<set>
using namespace std;
int n,m,a[10005];
long long dp[10005];
int main(void){
	cin>>n>>m;
	dp[0]=1;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		for(int j=a[i];j<=m;j++)
			dp[j]+=dp[j-a[i]];
	}
	cout<<dp[m];
	return 0;
}