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#include <bits/stdc++.h>

#include <iostream>

using namespace std;

int main(){

//program to find max product subarray.

int n;

cin>>n;

int arr[n];

for(int i=0;i<n;i++){

cin>>arr[i];

}

int ans = arr[0];

int mx = arr[0];

int mn = arr[0];

for(int i=1;i<n;i++){

if(arr[i]<0){

swap(mx, mn);

}

mx = max(arr[i], arr[i]*mx);

mn = min(arr[i], arr[i]*mn);

ans = max(ans, mx);

}

cout<<ans;

return 0;

}