https://cses.fi/paste/d2e2d0644e0a8603822f62/#include <iostream>
#include <algorithm>
using namespace std;
int dp[1000005], mod=1e9+7, coins[105];
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n, x;
cin>>n>>x;
for (int i=0; i<n; i++) {
cin>>coins[i];
}
dp[0]=1;
for (int j=0; j<n; j++) {
for (int i=1; i<=x; i++) {
if (coins[j]<=i) {
dp[i] += dp[i-coins[j]];
dp[i] %= mod;
}
}
}
cout<<dp[x]<<endl;
return 0;
} 