我理解错题义了？

#include<cstdio>
#include<iostream>
#include<fstream>
#include<algorithm>
#include<cstring>
using namespace std;

#define debug(x) cout<<"debug("<<#x<<"):"<<x<<endl

int n,a[32],ans2[32];

long long f[32][32],ans1=0;

int cnt=0;
void dfs(int l,int r){
	if(r<l)return;
	if(l==r)f[l][r]=a[l];
	int root=(l+r)>>1;
	ans2[++cnt]=root;
	dfs(l,root-1);
	dfs(root+1,r);
}

void solve(int l,int r){
	if(r<l){
		f[l][r]=1;
		return;
	}
	int m=(l+r)/2;
	if(l!=r){
		solve(l,m-1);
		solve(m+1,r);
	}
	f[l][r]=f[l][m-1]*f[m+1][r]+a[m];
	ans1=max(ans1,f[l][r]);
}

int main(){
	ios::sync_with_stdio(false);
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	dfs(1,n);
	solve(1,n);
	cout<<ans1<<endl;
	for(int i=1;i<n;i++){
		cout<<ans2[i]<<" ";
	}
	cout<<ans2[n];
	return 0;
}