/*
Unknown's C++ Template (v3.2)
*/
#include "bits/stdc++.h"
using namespace std;
#define int long long
using ll = long long;
using ld = long double;
using ii = pair<int, int>;
using vi = vector<int>;
using vii = vector<ii>;
using vvi = vector<vi>;
using vvii = vector<vii>;
template <class T> using maxpq = priority_queue<T>;
template <class T> using minpq = priority_queue<T, vector<T>, greater<T>>;
#define pb push_back
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define mid ((l+r)>>1)
#define fi first
#define se second
#ifdef LOCAL
#define debug(x) cout << #x << " = " << x << "\n";
#else
#define debug(x) ;
#endif
template <class A, class B>
ostream& operator << (ostream& out, pair<A, B> x)
{ out << "(" << x.first << ", " << x.second << ")"; return out; }
template <class T>
ostream& operator << (ostream& out, vector<T> x){
out << "[";
for (int i=0; i<sz(x); i++) { out << (i ? ", " : "") << x[i]; }
out << "]"; return out;
}
template <class T>
istream& operator >> (istream& in, vector<T> &x){
for (auto &i: x) in >> i;
return in;
}
const ld PI = acos(-1.0);
const int allmod[3] = {(int)1e9+7, 998244353, (int)1e9+9};
const int mod = allmod[0];
const int maxn = 1e2 + 5;
const ll inf = 1e18;
const ld eps = 1e-6;
const int multitest = 0;
map<int, int> dp[maxn][maxn][2][2];
// dp[blocks][middle_gaps][gap_left][gap_right] = {sum_of_diff: ways}
// void add(int &a, int b){
// a = (a + b) % mod;
// }
#define add(a, b) ((a) = (a) + (b))
void main_program(){
int n, l; cin >> n >> l;
vi v(n); cin >> v;
sort(all(v));
dp[0][0][1][1][-2 * v[0]] = 1;
dp[0][0][0][1][-v[0]] = 1;
dp[0][0][1][0][-v[0]] = 1;
dp[0][0][0][0][0] = 1;
for (int i = 1; i < n; i++){
// +2
for (int middle_gaps = 1; middle_gaps < maxn; middle_gaps++){
for (int gap_left = 0; gap_left < 2; gap_left++){
for (int gap_right = 0; gap_right < 2; gap_right++){
for (auto [diff, ways]: dp[i-1][middle_gaps][gap_left][gap_right]){
add(dp[i][middle_gaps-1][gap_left][gap_right][diff + 2 * v[i]], middle_gaps * ways);
}
}
}
}
// +1
for (int middle_gaps = 0; middle_gaps < maxn; middle_gaps++){
// left
for (int gap_right = 0; gap_right < 2; gap_right++){
for (auto [diff, ways]: dp[i-1][middle_gaps][1][gap_right]){
add(dp[i][middle_gaps][0][gap_right][diff + v[i]], ways);
}
}
// right
for (int gap_left = 0; gap_left < 2; gap_left++){
for (auto [diff, ways]: dp[i-1][middle_gaps][gap_left][1]){
add(dp[i][middle_gaps][gap_left][0][diff + v[i]], ways);
}
}
}
// 0
for (int middle_gaps = 0; middle_gaps < maxn; middle_gaps++){
for (int gap_left = 0; gap_left < 2; gap_left++){
for (int gap_right = 0; gap_right < 2; gap_right++){
for (auto [diff, ways]: dp[i-1][middle_gaps][gap_left][gap_right]){
add(dp[i][middle_gaps][gap_left][gap_right][diff], middle_gaps * ways);
}
}
}
}
// -1
for (int middle_gaps = 0; middle_gaps < maxn; middle_gaps++){
// left
for (int gap_right = 0; gap_right < 2; gap_right++){
for (auto [diff, ways]: dp[i-1][middle_gaps][1][gap_right]){
add(dp[i][middle_gaps][1][gap_right][diff - v[i]], ways);
}
}
// right
for (int gap_left = 0; gap_left < 2; gap_left++){
for (auto [diff, ways]: dp[i-1][middle_gaps][gap_left][1]){
add(dp[i][middle_gaps][gap_left][1][diff - v[i]], ways);
}
}
}
// -2
for (int middle_gaps = 0; middle_gaps < maxn - 1; middle_gaps++){
for (int gap_left = 0; gap_left < 2; gap_left++){
for (int gap_right = 0; gap_right < 2; gap_right++){
for (auto [diff, ways]: dp[i-1][middle_gaps][gap_left][gap_right]){
add(dp[i][middle_gaps+1][gap_left][gap_right][diff - 2 * v[i]], middle_gaps * ways);
}
}
}
}
}
int s = 0;
for (int i = 0; i <= l; i++) add(s, dp[n-1][0][0][0][i]);
cout << (s + mod) % mod << "\n";
}
void pre_main(){
}
signed main(){
#ifdef LOCAL
auto stime = chrono::high_resolution_clock::now();
#endif
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#ifndef ONLINE_JUDGE
if (fopen(".inp", "r")){
freopen(".inp", "r", stdin);
freopen(".out", "w", stdout);
}
#endif
int t = 1; if (multitest) cin >> t;
pre_main();
while (t--) main_program();
#ifdef LOCAL
auto etime = chrono::high_resolution_clock::now();
auto duration = chrono::duration_cast<chrono::milliseconds>(etime-stime).count();
cout << "\n[" << duration << "ms]\n";
#endif
}
