90pts求调

#include <bits/stdc++.h>
#define int long long
using namespace std;
int a[105],n,m,sum;
void dfs(int p,int id){
	if(p==m){
		sum++;
		return;
	}
	for(int i=id+1;i<=n;i++){
		if(p+a[i]<=m){
			dfs(p+a[i],i);
		}
	}
}
signed main(){
	//freopen(".in","r",stdin);
	//freopen(".out","w",stdout);
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>m;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	for(int i=1;i<=n;i++){
		dfs(a[i],i);
	}
	cout<<sum;
	return 0;
}