#include <iostream>
using namespace std;
const int N = 1E4 + 10;
typedef long long ll;
ll a[N], dp[30][N];
int main(){
    int n, m;   cin >> n >> m;
    for(int i = 1; i <= n; i ++ )    cin >> a[i];
    dp[0][0] = 1;
    for(int i = 1; i <= n; i ++ ){
        for(int j = 0; j <= m; j ++ ){
            dp[i][j] += dp[i - 1][j];
            if(j >= a[i])   dp[i][j] += dp[i][j - a[i]];
        }
    }
    cout << dp[n][m] << endl;
    return 0;
}