#include <bits/stdc++.h>
using namespace std;
const long long mod=1e9+7;
long long arr[1050],dp[10500],n,m;
int main() {
ios::sync_with_stdio(false);
cin.tie(0),cout.tie(0);
cin>>n>>m;
for(int i=1;i<=n;i++){
cin>>arr[i];
}
dp[0]=1;
for(int i=1;i<=n;i++){
for(int j=arr[i];j<=m;j++){
if(j<arr[i]){
continue;
}
dp[j]=(dp[j-arr[i]]+dp[j])%mod;
}
}
cout<<dp[m];
return 0;
}
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