#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n, m, a[30], dp[10025];
int main() {
cin >> n >> m;
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
dp[0] = 1;
for (int i = 1; i <= m; i++) {
for (int j = 1; j <= n; j++) {
if (i >= a[j]) dp[i] += dp[i - a[j]];
}
}
cout << dp[m];
return 0;
}
