#include <bits/stdc++.h>

using namespace std;
const int N = 110;

int n, m;
int f[N];

int main() {
    cin >> n >> m;
    for (int i = 0; i <= m; i++) f[i] = 1;
    for (int i = 1; i <= n; i++) {
        int v;
        cin >> v;
        for (int j = v; j <= m; j++) f[j] = f[j] + f[j - v];
    }
    cout << f[m] << endl;
    return 0;
}