#include <iostream>
#include <vector>
 
using namespace std;
 
int main() {
    int n, m;
    cin >> n >> m;
 
    vector<int> currency(n);
    for (int i = 0; i < n; ++i) {
        cin >> currency[i];
    }
    vector<long long> dp(m + 1, 0);
    dp[0] = 1;  
    for (int i = 0; i < n; ++i) {
        for (int j = currency[i]; j <= m; ++j) {
            dp[j] += dp[j - currency[i]];
        }
    }
    cout << dp[m] << endl;
    return 0;
}