1873B Good Kid.cpp

/*
    author    : MishkatIT
    created   : Thursday 2023-09-21-20.40.32
*/
#include<bits/stdc++.h>
#define fio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define debug(_) cout << #_ << " is " << _ << '\n';
using namespace std;
using ll        = long long;
using ld        = long double;
const ll mod    = 1e9 + 7;
const ll N      = 1e5 + 10;
const ll inf    = 1e9;
const ll linf   = 1e18;

int main()
{
    fio;
    int t;
    cin >> t;
    while(t--) {
        int n;
        cin >> n;
        vector<int>v(n);
        for (auto& i : v) {
            cin >> i;
        }
        int x = 0;
        int ans = 0;
        for (int i = 0; i < n; i++) {
            int temp = 1;
            for (int j = 0; j < n; j++) {
                if(j == x) {
                    temp *= (v[j] + 1);
                } else {
                    temp *= (v[j]);
                }
            }
            x++;
            ans = max(ans, temp);
        }
        cout << ans << '\n';
    }
    return 0;
}